{"id":7833,"date":"2017-05-25T19:23:32","date_gmt":"2017-05-25T19:23:32","guid":{"rendered":"https:\/\/courses.lumenlearning.com\/prealgebra\/?post_type=chapter&#038;p=7833"},"modified":"2019-05-27T05:44:40","modified_gmt":"2019-05-27T05:44:40","slug":"introduction","status":"publish","type":"chapter","link":"https:\/\/courses.lumenlearning.com\/csn-prealgebra\/chapter\/introduction\/","title":{"raw":"Introduction to Using Properties of Angles, Triangles, and the Pythagorean Theorem","rendered":"Introduction to Using Properties of Angles, Triangles, and the Pythagorean Theorem"},"content":{"raw":"<h2>What you'll learn to do: Use properties of angles, triangles, and the Pythagorean Theorem to solve problems<\/h2>\r\n[caption id=\"\" align=\"aligncenter\" width=\"718\"]<img class=\"\" src=\"https:\/\/s3-us-west-2.amazonaws.com\/courses-images\/wp-content\/uploads\/sites\/277\/2017\/04\/24223232\/CNX_BMath_Figure_09_00_001.png\" alt=\"Part of a glass building is shown. The structure is made up of individual shapes.\" width=\"718\" height=\"331\" \/> Note the many individual shapes in this building.[\/caption]\r\n\r\nWe are surrounded by all sorts of geometry. Architects use geometry to design buildings. Artists create vivid images out of colorful geometric shapes. Street signs, automobiles, and product packaging all take advantage of geometric properties. In this module, we will begin by considering a formal approach to solving problems and use it to solve a variety of common problems, including making decisions about money. Then we will explore geometry and relate it to everyday situations using the problem-solving strategy we develop.\r\n\r\nBefore you get started in this module, try a few practice problems and review\u00a0prior\u00a0concepts.\r\n<div class=\"textbox examples\">\r\n<h3>readiness quiz<\/h3>\r\n1)\r\n\r\nSolve: [latex]x+3+6=11[\/latex]\r\n\r\nSolution: [latex]x=2[\/latex]\r\n\r\n2)\r\n\r\n[ohm_question]146811[\/ohm_question]\r\n\r\nIf you missed this problem, review this video.\r\n\r\nhttps:\/\/youtu.be\/pXvzpSU4DyU\r\n\r\n3)\r\n\r\n[ohm_question]146636[\/ohm_question]\r\n\r\nIf you missed this problem, review this example.\r\n<div class=\"textbox shaded\">\r\n\r\nSimplify:\r\n\r\n[latex]\\sqrt{25+144}[\/latex]\r\n\r\n[reveal-answer q=\"390573\"]Show Solution[\/reveal-answer]\r\n[hidden-answer a=\"390573\"]\r\n<table id=\"eip-id1168469785439\" class=\"unnumbered unstyled\" summary=\".\" data-label=\"\">\r\n<tbody>\r\n<tr>\r\n<td>Use the order of operations.<\/td>\r\n<\/tr>\r\n<tr>\r\n<td>[latex]\\sqrt{25+144}[\/latex]<\/td>\r\n<\/tr>\r\n<tr>\r\n<td>Add under the radical sign.<\/td>\r\n<td>[latex]\\sqrt{169}[\/latex]<\/td>\r\n<\/tr>\r\n<tr>\r\n<td>Simplify.<\/td>\r\n<td>[latex]13[\/latex]<\/td>\r\n<\/tr>\r\n<\/tbody>\r\n<\/table>\r\n[\/hidden-answer]\r\n\r\n<\/div>\r\n<\/div>","rendered":"<h2>What you&#8217;ll learn to do: Use properties of angles, triangles, and the Pythagorean Theorem to solve problems<\/h2>\n<div style=\"width: 728px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" class=\"\" src=\"https:\/\/s3-us-west-2.amazonaws.com\/courses-images\/wp-content\/uploads\/sites\/277\/2017\/04\/24223232\/CNX_BMath_Figure_09_00_001.png\" alt=\"Part of a glass building is shown. The structure is made up of individual shapes.\" width=\"718\" height=\"331\" \/><\/p>\n<p class=\"wp-caption-text\">Note the many individual shapes in this building.<\/p>\n<\/div>\n<p>We are surrounded by all sorts of geometry. Architects use geometry to design buildings. Artists create vivid images out of colorful geometric shapes. Street signs, automobiles, and product packaging all take advantage of geometric properties. In this module, we will begin by considering a formal approach to solving problems and use it to solve a variety of common problems, including making decisions about money. Then we will explore geometry and relate it to everyday situations using the problem-solving strategy we develop.<\/p>\n<p>Before you get started in this module, try a few practice problems and review\u00a0prior\u00a0concepts.<\/p>\n<div class=\"textbox examples\">\n<h3>readiness quiz<\/h3>\n<p>1)<\/p>\n<p>Solve: [latex]x+3+6=11[\/latex]<\/p>\n<p>Solution: [latex]x=2[\/latex]<\/p>\n<p>2)<\/p>\n<p><iframe loading=\"lazy\" id=\"ohm146811\" class=\"resizable\" src=\"https:\/\/ohm.lumenlearning.com\/multiembedq.php?id=146811&theme=oea&iframe_resize_id=ohm146811&show_question_numbers\" width=\"100%\" height=\"150\"><\/iframe><\/p>\n<p>If you missed this problem, review this video.<\/p>\n<p><iframe loading=\"lazy\" id=\"oembed-1\" title=\"Ex: Solve a Proportion by Clearing Fractions (x\/a=b\/c, Whole Num  Solution)\" width=\"500\" height=\"375\" src=\"https:\/\/www.youtube.com\/embed\/pXvzpSU4DyU?feature=oembed&#38;rel=0\" frameborder=\"0\" allowfullscreen=\"allowfullscreen\"><\/iframe><\/p>\n<p>3)<\/p>\n<p><iframe loading=\"lazy\" id=\"ohm146636\" class=\"resizable\" src=\"https:\/\/ohm.lumenlearning.com\/multiembedq.php?id=146636&theme=oea&iframe_resize_id=ohm146636&show_question_numbers\" width=\"100%\" height=\"150\"><\/iframe><\/p>\n<p>If you missed this problem, review this example.<\/p>\n<div class=\"textbox shaded\">\n<p>Simplify:<\/p>\n<p>[latex]\\sqrt{25+144}[\/latex]<\/p>\n<div class=\"qa-wrapper\" style=\"display: block\"><span class=\"show-answer collapsed\" style=\"cursor: pointer\" data-target=\"q390573\">Show Solution<\/span><\/p>\n<div id=\"q390573\" class=\"hidden-answer\" style=\"display: none\">\n<table id=\"eip-id1168469785439\" class=\"unnumbered unstyled\" summary=\".\" data-label=\"\">\n<tbody>\n<tr>\n<td>Use the order of operations.<\/td>\n<\/tr>\n<tr>\n<td>[latex]\\sqrt{25+144}[\/latex]<\/td>\n<\/tr>\n<tr>\n<td>Add under the radical sign.<\/td>\n<td>[latex]\\sqrt{169}[\/latex]<\/td>\n<\/tr>\n<tr>\n<td>Simplify.<\/td>\n<td>[latex]13[\/latex]<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n\n\t\t\t <section class=\"citations-section\" role=\"contentinfo\">\n\t\t\t <h3>Candela Citations<\/h3>\n\t\t\t\t\t <div>\n\t\t\t\t\t\t <div id=\"citation-list-7833\">\n\t\t\t\t\t\t\t <div class=\"licensing\"><div class=\"license-attribution-dropdown-subheading\">CC licensed content, Shared previously<\/div><ul class=\"citation-list\"><li>Glass canopy at the Liege-Guillemins railway station, designed by Santiago Calatrava. <strong>Authored by<\/strong>: Bert Kaufmann. <strong>Located at<\/strong>: <a target=\"_blank\" href=\"https:\/\/www.flickr.com\/photos\/22746515@N02\/5377120535\/\">https:\/\/www.flickr.com\/photos\/22746515@N02\/5377120535\/<\/a>. <strong>License<\/strong>: <em><a target=\"_blank\" rel=\"license\" href=\"https:\/\/creativecommons.org\/licenses\/by\/4.0\/\">CC BY: Attribution<\/a><\/em><\/li><li>Ex: Solve a Proportion by Clearing Fractions (x\/a=b\/c, Whole Num Solution). <strong>Authored by<\/strong>: James Sousa (Mathispower4u.com). <strong>Located at<\/strong>: <a target=\"_blank\" href=\"https:\/\/youtu.be\/pXvzpSU4DyU\">https:\/\/youtu.be\/pXvzpSU4DyU<\/a>. <strong>License<\/strong>: <em><a target=\"_blank\" rel=\"license\" href=\"https:\/\/creativecommons.org\/licenses\/by\/4.0\/\">CC BY: Attribution<\/a><\/em><\/li><li>Question ID: 146636, 146811. <strong>Authored by<\/strong>: Lumen Learning. <strong>License<\/strong>: <em><a target=\"_blank\" rel=\"license\" href=\"https:\/\/creativecommons.org\/licenses\/by\/4.0\/\">CC BY: Attribution<\/a><\/em>. <strong>License Terms<\/strong>: IMathAS Community License CC-BY + GPL<\/li><\/ul><div class=\"license-attribution-dropdown-subheading\">CC licensed content, Specific attribution<\/div><ul class=\"citation-list\"><li>Prealgebra. <strong>Provided by<\/strong>: OpenStax. <strong>License<\/strong>: <em><a target=\"_blank\" rel=\"license\" href=\"https:\/\/creativecommons.org\/licenses\/by\/4.0\/\">CC BY: Attribution<\/a><\/em>. <strong>License Terms<\/strong>: Download for free at http:\/\/cnx.org\/contents\/caa57dab-41c7-455e-bd6f-f443cda5519c@9.757<\/li><\/ul><\/div>\n\t\t\t\t\t\t <\/div>\n\t\t\t\t\t <\/div>\n\t\t\t <\/section>","protected":false},"author":21,"menu_order":2,"template":"","meta":{"_candela_citation":"[{\"type\":\"cc\",\"description\":\"Glass canopy at the Liege-Guillemins railway station, designed by Santiago Calatrava\",\"author\":\"Bert Kaufmann\",\"organization\":\"\",\"url\":\"https:\/\/www.flickr.com\/photos\/22746515@N02\/5377120535\/\",\"project\":\"\",\"license\":\"cc-by\",\"license_terms\":\"\"},{\"type\":\"cc-attribution\",\"description\":\"Prealgebra\",\"author\":\"\",\"organization\":\"OpenStax\",\"url\":\"\",\"project\":\"\",\"license\":\"cc-by\",\"license_terms\":\"Download for free at 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