{"id":363,"date":"2022-04-12T10:21:20","date_gmt":"2022-04-12T10:21:20","guid":{"rendered":"http:\/\/7thclass.deltapublications.in\/?page_id=363"},"modified":"2024-10-16T10:39:37","modified_gmt":"2024-10-16T10:39:37","slug":"r-2-name-measure-and-classify-angles","status":"publish","type":"page","link":"https:\/\/7thclass.deltapublications.in\/index.php\/r-2-name-measure-and-classify-angles\/","title":{"rendered":"R.2 Name, measure and classify angles"},"content":{"rendered":"\n<h2 class=\"wp-block-heading has-text-align-center has-text-color\" style=\"color:#00056d;text-transform:uppercase\"><strong> Name, measure and classify angles<\/strong><\/h2>\n\n\n\n<p class=\"has-text-color has-huge-font-size\" style=\"color:#74008b\"><strong>Key notes:<\/strong><\/p>\n\n\n\n<h3 class=\"wp-block-heading has-text-color has-large-font-size\" style=\"color:#000060\">1. <strong>Understanding Angles<\/strong><\/h3>\n\n\n\n<ul class=\"has-large-font-size wp-block-list\">\n<li><strong>Definition:<\/strong> An angle is formed by two rays (sides) that share a common endpoint called the <strong>vertex<\/strong>.<\/li>\n\n\n\n<li><strong>Notation:<\/strong> Angles are usually named using three points (the vertex is always the middle point) or a single letter representing the vertex (e.g., \u2220ABC or \u2220A).<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading has-text-color has-large-font-size\" style=\"color:#000060\">2. <strong>Measuring Angles<\/strong><\/h3>\n\n\n\n<ul class=\"has-large-font-size wp-block-list\">\n<li><strong>Protractor:<\/strong> A protractor is a tool used to measure angles in degrees (\u00b0).<\/li>\n\n\n\n<li><strong>Measurement Range:<\/strong> Angles can be measured from 0\u00b0 to 360\u00b0.\n<ul class=\"wp-block-list\">\n<li><strong>Zero Angle:<\/strong> 0\u00b0<\/li>\n\n\n\n<li><strong>Acute Angle:<\/strong> Less than 90\u00b0<\/li>\n\n\n\n<li><strong>Right Angle:<\/strong> Exactly 90\u00b0<\/li>\n\n\n\n<li><strong>Obtuse Angle:<\/strong> Between 90\u00b0 and 180\u00b0<\/li>\n\n\n\n<li><strong>Straight Angle:<\/strong> Exactly 180\u00b0<\/li>\n\n\n\n<li><strong>Reflex Angle:<\/strong> Between 180\u00b0 and 360\u00b0<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading has-text-color has-large-font-size\" style=\"color:#000060\">3. <strong>Classifying Angles<\/strong><\/h3>\n\n\n\n<ul class=\"has-large-font-size wp-block-list\">\n<li><strong>Acute Angles (0\u00b0 &lt; angle &lt; 90\u00b0):<\/strong> Angles that are smaller than a right angle.<\/li>\n\n\n\n<li><strong>Right Angles (angle = 90\u00b0):<\/strong> Angles that form a perfect corner.<\/li>\n\n\n\n<li><strong>Obtuse Angles (90\u00b0 &lt; angle &lt; 180\u00b0):<\/strong> Angles larger than a right angle but smaller than a straight angle.<\/li>\n\n\n\n<li><strong>Straight Angles (angle = 180\u00b0):<\/strong> Angles that are in a straight line.<\/li>\n\n\n\n<li><strong>Reflex Angles (180\u00b0 &lt; angle &lt; 360\u00b0):<\/strong> Angles larger than a straight angle.<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading has-text-color has-large-font-size\" style=\"color:#000060\">4. <strong>Angle Relationships<\/strong><\/h3>\n\n\n\n<ul class=\"has-large-font-size wp-block-list\">\n<li><strong>Complementary Angles:<\/strong> Two angles that add up to 90\u00b0.<\/li>\n\n\n\n<li><strong>Supplementary Angles:<\/strong> Two angles that add up to 180\u00b0.<\/li>\n\n\n\n<li><strong>Adjacent Angles:<\/strong> Angles that share a common vertex and side but do not overlap.<\/li>\n\n\n\n<li><strong>Vertical Angles:<\/strong> Angles that are opposite each other when two lines intersect; they are always equal.<\/li>\n<\/ul>\n\n\n\n<div class=\"wp-block-group has-large-font-size\"><div class=\"wp-block-group__inner-container is-layout-constrained wp-block-group-is-layout-constrained\">\n<p class=\"has-text-align-center has-text-color has-large-font-size\" style=\"color:#105000\"><strong>Learn with an example<\/strong><\/p>\n\n\n\n<div class=\"wp-block-group has-primary-color has-text-color has-background\" style=\"background-color:#e4f8d1\"><div class=\"wp-block-group__inner-container is-layout-flow wp-block-group-is-layout-flow\">\n<div class=\"wp-block-group has-primary-color has-background-background-color has-text-color has-background\"><div class=\"wp-block-group__inner-container is-layout-flow wp-block-group-is-layout-flow\">\n<p class=\"has-text-color\" style=\"color:#b00012\">\u27a1\ufe0f <strong>Is this angle acute, right, obtuse, or straight?<\/strong><\/p>\n\n\n<div class=\"wp-block-image is-resized\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"500\" height=\"500\" src=\"https:\/\/7thclass.deltapublications.in\/wp-content\/uploads\/2023\/01\/Untitled__670___200px___670___100px___500___500px___4_-removebg-preview.png\" alt=\"\" class=\"wp-image-4747\" style=\"aspect-ratio:1;width:326px;height:auto\" srcset=\"https:\/\/7thclass.deltapublications.in\/wp-content\/uploads\/2023\/01\/Untitled__670___200px___670___100px___500___500px___4_-removebg-preview.png 500w, https:\/\/7thclass.deltapublications.in\/wp-content\/uploads\/2023\/01\/Untitled__670___200px___670___100px___500___500px___4_-removebg-preview-300x300.png 300w, https:\/\/7thclass.deltapublications.in\/wp-content\/uploads\/2023\/01\/Untitled__670___200px___670___100px___500___500px___4_-removebg-preview-150x150.png 150w, https:\/\/7thclass.deltapublications.in\/wp-content\/uploads\/2023\/01\/Untitled__670___200px___670___100px___500___500px___4_-removebg-preview-400x400.png 400w\" sizes=\"auto, (max-width: 500px) 100vw, 500px\" \/><\/figure><\/div>\n\n\n<ul class=\"wp-block-list\">\n<li>acute <\/li>\n\n\n\n<li>right<\/li>\n\n\n\n<li>obtuse <\/li>\n\n\n\n<li>straight<\/li>\n<\/ul>\n<\/div><\/div>\n\n\n\n<p>Look at this angle:<\/p>\n\n\n<div class=\"wp-block-image is-resized\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"500\" height=\"500\" src=\"https:\/\/7thclass.deltapublications.in\/wp-content\/uploads\/2023\/01\/Untitled__670___200px___670___100px___500___500px___4_-removebg-preview-1.png\" alt=\"\" class=\"wp-image-4748\" style=\"aspect-ratio:1;width:310px;height:auto\" srcset=\"https:\/\/7thclass.deltapublications.in\/wp-content\/uploads\/2023\/01\/Untitled__670___200px___670___100px___500___500px___4_-removebg-preview-1.png 500w, https:\/\/7thclass.deltapublications.in\/wp-content\/uploads\/2023\/01\/Untitled__670___200px___670___100px___500___500px___4_-removebg-preview-1-300x300.png 300w, https:\/\/7thclass.deltapublications.in\/wp-content\/uploads\/2023\/01\/Untitled__670___200px___670___100px___500___500px___4_-removebg-preview-1-150x150.png 150w, https:\/\/7thclass.deltapublications.in\/wp-content\/uploads\/2023\/01\/Untitled__670___200px___670___100px___500___500px___4_-removebg-preview-1-400x400.png 400w\" sizes=\"auto, (max-width: 500px) 100vw, 500px\" \/><\/figure><\/div>\n\n\n<p>This angle measures exactly 180\u00b0. This angle is a straight angle.<\/p>\n<\/div><\/div>\n\n\n\n<div class=\"wp-block-group has-primary-color has-text-color has-background\" style=\"background-color:#cafdce\"><div class=\"wp-block-group__inner-container is-layout-flow wp-block-group-is-layout-flow\">\n<div class=\"wp-block-group has-primary-color has-background-background-color has-text-color has-background\"><div class=\"wp-block-group__inner-container is-layout-flow wp-block-group-is-layout-flow\">\n<p class=\"has-text-color\" style=\"color:#b00012\">\u27a1\ufe0f<strong> Look&nbsp;at this&nbsp;angle:<\/strong><\/p>\n\n\n<div class=\"wp-block-image is-resized\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"500\" height=\"500\" src=\"https:\/\/7thclass.deltapublications.in\/wp-content\/uploads\/2023\/01\/Untitled__670___200px___670___100px___500___500px___5_-removebg-preview.png\" alt=\"\" class=\"wp-image-4749\" style=\"aspect-ratio:1;width:310px;height:auto\" srcset=\"https:\/\/7thclass.deltapublications.in\/wp-content\/uploads\/2023\/01\/Untitled__670___200px___670___100px___500___500px___5_-removebg-preview.png 500w, https:\/\/7thclass.deltapublications.in\/wp-content\/uploads\/2023\/01\/Untitled__670___200px___670___100px___500___500px___5_-removebg-preview-300x300.png 300w, https:\/\/7thclass.deltapublications.in\/wp-content\/uploads\/2023\/01\/Untitled__670___200px___670___100px___500___500px___5_-removebg-preview-150x150.png 150w, https:\/\/7thclass.deltapublications.in\/wp-content\/uploads\/2023\/01\/Untitled__670___200px___670___100px___500___500px___5_-removebg-preview-400x400.png 400w\" sizes=\"auto, (max-width: 500px) 100vw, 500px\" \/><\/figure><\/div>\n\n\n<p>Name&nbsp;this angle:&nbsp;______<\/p>\n<\/div><\/div>\n\n\n\n<p>In&nbsp;this angle, the vertex is&nbsp;A:<\/p>\n\n\n<div class=\"wp-block-image is-resized\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"500\" height=\"500\" src=\"https:\/\/7thclass.deltapublications.in\/wp-content\/uploads\/2023\/01\/Untitled__670___200px___670___100px___500___500px___6_-removebg-preview.png\" alt=\"\" class=\"wp-image-4750\" style=\"aspect-ratio:1;width:318px;height:auto\" srcset=\"https:\/\/7thclass.deltapublications.in\/wp-content\/uploads\/2023\/01\/Untitled__670___200px___670___100px___500___500px___6_-removebg-preview.png 500w, https:\/\/7thclass.deltapublications.in\/wp-content\/uploads\/2023\/01\/Untitled__670___200px___670___100px___500___500px___6_-removebg-preview-300x300.png 300w, https:\/\/7thclass.deltapublications.in\/wp-content\/uploads\/2023\/01\/Untitled__670___200px___670___100px___500___500px___6_-removebg-preview-150x150.png 150w, https:\/\/7thclass.deltapublications.in\/wp-content\/uploads\/2023\/01\/Untitled__670___200px___670___100px___500___500px___6_-removebg-preview-400x400.png 400w\" sizes=\"auto, (max-width: 500px) 100vw, 500px\" \/><\/figure><\/div>\n\n\n<p>Name&nbsp;the angle using the points&nbsp;B,&nbsp;A,&nbsp;and&nbsp;C.&nbsp;The symbol&nbsp;\u2220&nbsp;means&nbsp;<em>angle<\/em>,&nbsp;so it is written first. Be sure to write the vertex in the&nbsp;middle:<\/p>\n\n\n\n<p>\u2220BAC&nbsp;and&nbsp;\u2220CAB<\/p>\n\n\n\n<p>You&nbsp;can also name the angle using just the&nbsp;vertex:<\/p>\n\n\n\n<p>\u2220A<\/p>\n<\/div><\/div>\n\n\n\n<div class=\"wp-block-group has-primary-color has-text-color has-background\" style=\"background-color:#d5e2fe\"><div class=\"wp-block-group__inner-container is-layout-flow wp-block-group-is-layout-flow\">\n<div class=\"wp-block-group has-primary-color has-background-background-color has-text-color has-background\"><div class=\"wp-block-group__inner-container is-layout-constrained wp-block-group-is-layout-constrained\">\n<p class=\"has-text-color\" style=\"color:#b00012\">\u27a1\ufe0f <strong>Is this angle acute, right, obtuse, or straight?<\/strong><\/p>\n\n\n<div class=\"wp-block-image is-resized\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"500\" height=\"500\" src=\"https:\/\/7thclass.deltapublications.in\/wp-content\/uploads\/2023\/01\/Untitled__670___200px___670___100px___500___500px___7_-removebg-preview.png\" alt=\"\" class=\"wp-image-4755\" style=\"aspect-ratio:1;width:286px;height:auto\" srcset=\"https:\/\/7thclass.deltapublications.in\/wp-content\/uploads\/2023\/01\/Untitled__670___200px___670___100px___500___500px___7_-removebg-preview.png 500w, https:\/\/7thclass.deltapublications.in\/wp-content\/uploads\/2023\/01\/Untitled__670___200px___670___100px___500___500px___7_-removebg-preview-300x300.png 300w, https:\/\/7thclass.deltapublications.in\/wp-content\/uploads\/2023\/01\/Untitled__670___200px___670___100px___500___500px___7_-removebg-preview-150x150.png 150w, https:\/\/7thclass.deltapublications.in\/wp-content\/uploads\/2023\/01\/Untitled__670___200px___670___100px___500___500px___7_-removebg-preview-400x400.png 400w\" sizes=\"auto, (max-width: 500px) 100vw, 500px\" \/><\/figure><\/div>\n\n\n<ul class=\"wp-block-list\">\n<li>acute <\/li>\n\n\n\n<li>right<\/li>\n\n\n\n<li>obtuse <\/li>\n\n\n\n<li>straight<\/li>\n<\/ul>\n<\/div><\/div>\n\n\n\n<p>Look at this angle:<\/p>\n\n\n<div class=\"wp-block-image is-resized\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"500\" height=\"500\" src=\"https:\/\/7thclass.deltapublications.in\/wp-content\/uploads\/2023\/01\/Untitled__670___200px___670___100px___500___500px___7_-removebg-preview-1.png\" alt=\"\" class=\"wp-image-4758\" style=\"aspect-ratio:1;width:326px;height:auto\" srcset=\"https:\/\/7thclass.deltapublications.in\/wp-content\/uploads\/2023\/01\/Untitled__670___200px___670___100px___500___500px___7_-removebg-preview-1.png 500w, https:\/\/7thclass.deltapublications.in\/wp-content\/uploads\/2023\/01\/Untitled__670___200px___670___100px___500___500px___7_-removebg-preview-1-300x300.png 300w, https:\/\/7thclass.deltapublications.in\/wp-content\/uploads\/2023\/01\/Untitled__670___200px___670___100px___500___500px___7_-removebg-preview-1-150x150.png 150w, https:\/\/7thclass.deltapublications.in\/wp-content\/uploads\/2023\/01\/Untitled__670___200px___670___100px___500___500px___7_-removebg-preview-1-400x400.png 400w\" sizes=\"auto, (max-width: 500px) 100vw, 500px\" \/><\/figure><\/div>\n\n\n<p>This angle measures more than 90\u00b0 but less than 180\u00b0. This angle is an obtuse angle.<\/p>\n<\/div><\/div>\n\n\n\n<p class=\"has-text-color has-large-font-size\" style=\"color:#d90000\"><strong>Let&#8217;s practice!\ud83d\udd8a\ufe0f<\/strong><\/p>\n<\/div><\/div>\n\n\n\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-9d6595d7 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<figure class=\"wp-block-image size-full\"><a href=\"https:\/\/wordwall.net\/play\/79925\/120\/847\"><img loading=\"lazy\" decoding=\"async\" width=\"500\" height=\"500\" src=\"https:\/\/7thclass.deltapublications.in\/wp-content\/uploads\/2023\/05\/Worksheet-1-2-85.png\" alt=\"\" class=\"wp-image-6743\" srcset=\"https:\/\/7thclass.deltapublications.in\/wp-content\/uploads\/2023\/05\/Worksheet-1-2-85.png 500w, https:\/\/7thclass.deltapublications.in\/wp-content\/uploads\/2023\/05\/Worksheet-1-2-85-300x300.png 300w, https:\/\/7thclass.deltapublications.in\/wp-content\/uploads\/2023\/05\/Worksheet-1-2-85-150x150.png 150w, https:\/\/7thclass.deltapublications.in\/wp-content\/uploads\/2023\/05\/Worksheet-1-2-85-400x400.png 400w\" sizes=\"auto, (max-width: 500px) 100vw, 500px\" \/><\/a><\/figure>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<figure class=\"wp-block-image size-full\"><a href=\"https:\/\/wordwall.net\/play\/79867\/585\/487\"><img loading=\"lazy\" decoding=\"async\" width=\"500\" height=\"500\" src=\"https:\/\/7thclass.deltapublications.in\/wp-content\/uploads\/2023\/05\/Worksheet-1-1-1-86.png\" alt=\"\" class=\"wp-image-6744\" srcset=\"https:\/\/7thclass.deltapublications.in\/wp-content\/uploads\/2023\/05\/Worksheet-1-1-1-86.png 500w, https:\/\/7thclass.deltapublications.in\/wp-content\/uploads\/2023\/05\/Worksheet-1-1-1-86-300x300.png 300w, https:\/\/7thclass.deltapublications.in\/wp-content\/uploads\/2023\/05\/Worksheet-1-1-1-86-150x150.png 150w, https:\/\/7thclass.deltapublications.in\/wp-content\/uploads\/2023\/05\/Worksheet-1-1-1-86-400x400.png 400w\" sizes=\"auto, (max-width: 500px) 100vw, 500px\" \/><\/a><\/figure>\n<\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>Name, measure and classify angles Key notes: 1. Understanding Angles 2. Measuring Angles 3. Classifying Angles 4. Angle Relationships Learn with an example \u27a1\ufe0f Is this angle acute, right, obtuse, or straight? Look at this angle: This angle measures exactly 180\u00b0. This angle is a straight angle. \u27a1\ufe0f Look&nbsp;at this&nbsp;angle: Name&nbsp;this angle:&nbsp;______ In&nbsp;this angle, the<a class=\"more-link\" href=\"https:\/\/7thclass.deltapublications.in\/index.php\/r-2-name-measure-and-classify-angles\/\">Continue reading <span class=\"screen-reader-text\">&#8220;R.2 Name, measure and classify angles&#8221;<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"om_disable_all_campaigns":false,"footnotes":""},"class_list":["post-363","page","type-page","status-publish","hentry","entry"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/7thclass.deltapublications.in\/index.php\/wp-json\/wp\/v2\/pages\/363","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/7thclass.deltapublications.in\/index.php\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/7thclass.deltapublications.in\/index.php\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/7thclass.deltapublications.in\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/7thclass.deltapublications.in\/index.php\/wp-json\/wp\/v2\/comments?post=363"}],"version-history":[{"count":19,"href":"https:\/\/7thclass.deltapublications.in\/index.php\/wp-json\/wp\/v2\/pages\/363\/revisions"}],"predecessor-version":[{"id":14438,"href":"https:\/\/7thclass.deltapublications.in\/index.php\/wp-json\/wp\/v2\/pages\/363\/revisions\/14438"}],"wp:attachment":[{"href":"https:\/\/7thclass.deltapublications.in\/index.php\/wp-json\/wp\/v2\/media?parent=363"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}