{"id":1845,"date":"2015-11-12T18:30:44","date_gmt":"2015-11-12T18:30:44","guid":{"rendered":"https:\/\/courses.candelalearning.com\/collegealgebra1xmaster\/?post_type=chapter&#038;p=1845"},"modified":"2015-11-12T18:30:44","modified_gmt":"2015-11-12T18:30:44","slug":"key-concepts-glossary-25","status":"publish","type":"chapter","link":"https:\/\/courses.lumenlearning.com\/ivytech-collegealgebra\/chapter\/key-concepts-glossary-25\/","title":{"raw":"Key Concepts &amp; Glossary","rendered":"Key Concepts &amp; Glossary"},"content":{"raw":"<h2>Key Equations<\/h2>\n<table id=\"fs-id1351656\" summary=\"..\"><tbody><tr><td>Horizontal ellipse, center at origin<\/td>\n<td>[latex]\\frac{{x}^{2}}{{a}^{2}}+\\frac{{y}^{2}}{{b}^{2}}=1,\\text{ }a&gt;b[\/latex]<\/td>\n<\/tr><tr><td>Vertical ellipse, center at origin<\/td>\n<td>[latex]\\frac{{x}^{2}}{{b}^{2}}+\\frac{{y}^{2}}{{a}^{2}}=1,\\text{ }a&gt;b[\/latex]<\/td>\n<\/tr><tr><td>Horizontal ellipse, center [latex]\\left(h,k\\right)[\/latex]<\/td>\n<td>[latex]\\frac{{\\left(x-h\\right)}^{2}}{{a}^{2}}+\\frac{{\\left(y-k\\right)}^{2}}{{b}^{2}}=1,\\text{ }a&gt;b[\/latex]<\/td>\n<\/tr><tr><td>Vertical ellipse, center [latex]\\left(h,k\\right)[\/latex]<\/td>\n<td>[latex]\\frac{{\\left(x-h\\right)}^{2}}{{b}^{2}}+\\frac{{\\left(y-k\\right)}^{2}}{{a}^{2}}=1,\\text{ }a&gt;b[\/latex]<\/td>\n<\/tr><\/tbody><\/table><h2>Key Concepts<\/h2>\n<ul><li>An ellipse is the set of all points [latex]\\left(x,y\\right)[\/latex] in a plane such that the sum of their distances from two fixed points is a constant. Each fixed point is called a focus (plural: foci).<\/li>\n\t<li>When given the coordinates of the foci and vertices of an ellipse, we can write the equation of the ellipse in standard form.<\/li>\n\t<li>When given an equation for an ellipse centered at the origin in standard form, we can identify its vertices, co-vertices, foci, and the lengths and positions of the major and minor axes in order to graph the ellipse.<\/li>\n\t<li>When given the equation for an ellipse centered at some point other than the origin, we can identify its key features and graph the ellipse.<\/li>\n\t<li>Real-world situations can be modeled using the standard equations of ellipses and then evaluated to find key features, such as lengths of axes and distance between foci.<\/li>\n<\/ul><h2>Glossary<\/h2>\n<dl id=\"fs-id1352137\" class=\"definition\"><dt>center of an ellipse<\/dt><dd id=\"fs-id1345665\">the midpoint of both the major and minor axes<\/dd><\/dl><dl id=\"fs-id1345668\" class=\"definition\"><dt>conic section<\/dt><dd id=\"fs-id1345672\">any shape resulting from the intersection of a right circular cone with a plane<\/dd><\/dl><dl id=\"fs-id1345675\" class=\"definition\"><dt>ellipse<\/dt><dd id=\"fs-id1345680\">the set of all points [latex]\\left(x,y\\right)[\/latex] in a plane such that the sum of their distances from two fixed points is a constant<\/dd><\/dl><dl id=\"fs-id1345712\" class=\"definition\"><dt>foci<\/dt><dd id=\"fs-id1345716\">plural of focus<\/dd><\/dl><dl id=\"fs-id1345719\" class=\"definition\"><dt>focus (of an ellipse)<\/dt><dd id=\"fs-id1345723\">one of the two fixed points on the major axis of an ellipse such that the sum of the distances from these points to any point [latex]\\left(x,y\\right)[\/latex] on the ellipse is a constant<\/dd><\/dl><dl id=\"fs-id1345756\" class=\"definition\"><dt>major axis<\/dt><dd id=\"fs-id1350559\">the longer of the two axes of an ellipse<\/dd><\/dl><dl id=\"fs-id1350562\" class=\"definition\"><dt>minor axis<\/dt><dd id=\"fs-id1350566\">the shorter of the two axes of an ellipse<\/dd><\/dl>","rendered":"<h2>Key Equations<\/h2>\n<table id=\"fs-id1351656\" summary=\"..\">\n<tbody>\n<tr>\n<td>Horizontal ellipse, center at origin<\/td>\n<td>[latex]\\frac{{x}^{2}}{{a}^{2}}+\\frac{{y}^{2}}{{b}^{2}}=1,\\text{ }a>b[\/latex]<\/td>\n<\/tr>\n<tr>\n<td>Vertical ellipse, center at origin<\/td>\n<td>[latex]\\frac{{x}^{2}}{{b}^{2}}+\\frac{{y}^{2}}{{a}^{2}}=1,\\text{ }a>b[\/latex]<\/td>\n<\/tr>\n<tr>\n<td>Horizontal ellipse, center [latex]\\left(h,k\\right)[\/latex]<\/td>\n<td>[latex]\\frac{{\\left(x-h\\right)}^{2}}{{a}^{2}}+\\frac{{\\left(y-k\\right)}^{2}}{{b}^{2}}=1,\\text{ }a>b[\/latex]<\/td>\n<\/tr>\n<tr>\n<td>Vertical ellipse, center [latex]\\left(h,k\\right)[\/latex]<\/td>\n<td>[latex]\\frac{{\\left(x-h\\right)}^{2}}{{b}^{2}}+\\frac{{\\left(y-k\\right)}^{2}}{{a}^{2}}=1,\\text{ }a>b[\/latex]<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2>Key Concepts<\/h2>\n<ul>\n<li>An ellipse is the set of all points [latex]\\left(x,y\\right)[\/latex] in a plane such that the sum of their distances from two fixed points is a constant. Each fixed point is called a focus (plural: foci).<\/li>\n<li>When given the coordinates of the foci and vertices of an ellipse, we can write the equation of the ellipse in standard form.<\/li>\n<li>When given an equation for an ellipse centered at the origin in standard form, we can identify its vertices, co-vertices, foci, and the lengths and positions of the major and minor axes in order to graph the ellipse.<\/li>\n<li>When given the equation for an ellipse centered at some point other than the origin, we can identify its key features and graph the ellipse.<\/li>\n<li>Real-world situations can be modeled using the standard equations of ellipses and then evaluated to find key features, such as lengths of axes and distance between foci.<\/li>\n<\/ul>\n<h2>Glossary<\/h2>\n<dl id=\"fs-id1352137\" class=\"definition\">\n<dt>center of an ellipse<\/dt>\n<dd id=\"fs-id1345665\">the midpoint of both the major and minor axes<\/dd>\n<\/dl>\n<dl id=\"fs-id1345668\" class=\"definition\">\n<dt>conic section<\/dt>\n<dd id=\"fs-id1345672\">any shape resulting from the intersection of a right circular cone with a plane<\/dd>\n<\/dl>\n<dl id=\"fs-id1345675\" class=\"definition\">\n<dt>ellipse<\/dt>\n<dd id=\"fs-id1345680\">the set of all points [latex]\\left(x,y\\right)[\/latex] in a plane such that the sum of their distances from two fixed points is a constant<\/dd>\n<\/dl>\n<dl id=\"fs-id1345712\" class=\"definition\">\n<dt>foci<\/dt>\n<dd id=\"fs-id1345716\">plural of focus<\/dd>\n<\/dl>\n<dl id=\"fs-id1345719\" class=\"definition\">\n<dt>focus (of an ellipse)<\/dt>\n<dd id=\"fs-id1345723\">one of the two fixed points on the major axis of an ellipse such that the sum of the distances from these points to any point [latex]\\left(x,y\\right)[\/latex] on the ellipse is a constant<\/dd>\n<\/dl>\n<dl id=\"fs-id1345756\" class=\"definition\">\n<dt>major axis<\/dt>\n<dd id=\"fs-id1350559\">the longer of the two axes of an ellipse<\/dd>\n<\/dl>\n<dl id=\"fs-id1350562\" class=\"definition\">\n<dt>minor axis<\/dt>\n<dd id=\"fs-id1350566\">the shorter of the two axes of an ellipse<\/dd>\n<\/dl>\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-1845\">\n\t\t\t\t\t\t\t <div class=\"licensing\"><div class=\"license-attribution-dropdown-subheading\">CC licensed content, Specific attribution<\/div><ul class=\"citation-list\"><li>Precalculus. <strong>Authored by<\/strong>: OpenStax College. <strong>Provided by<\/strong>: OpenStax. <strong>Located at<\/strong>: <a target=\"_blank\" href=\"http:\/\/cnx.org\/contents\/fd53eae1-fa23-47c7-bb1b-972349835c3c@5.175:1\/Preface\">http:\/\/cnx.org\/contents\/fd53eae1-fa23-47c7-bb1b-972349835c3c@5.175:1\/Preface<\/a>. <strong>License<\/strong>: <em><a target=\"_blank\" rel=\"license\" href=\"https:\/\/creativecommons.org\/licenses\/by\/4.0\/\">CC BY: Attribution<\/a><\/em><\/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":276,"menu_order":7,"template":"","meta":{"_candela_citation":"[{\"type\":\"cc-attribution\",\"description\":\"Precalculus\",\"author\":\"OpenStax College\",\"organization\":\"OpenStax\",\"url\":\"http:\/\/cnx.org\/contents\/fd53eae1-fa23-47c7-bb1b-972349835c3c@5.175:1\/Preface\",\"project\":\"\",\"license\":\"cc-by\",\"license_terms\":\"\"}]","CANDELA_OUTCOMES_GUID":"","pb_show_title":"on","pb_short_title":"","pb_subtitle":"","pb_authors":[],"pb_section_license":""},"chapter-type":[],"contributor":[],"license":[],"class_list":["post-1845","chapter","type-chapter","status-publish","hentry"],"part":1825,"_links":{"self":[{"href":"https:\/\/courses.lumenlearning.com\/ivytech-collegealgebra\/wp-json\/pressbooks\/v2\/chapters\/1845","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/courses.lumenlearning.com\/ivytech-collegealgebra\/wp-json\/pressbooks\/v2\/chapters"}],"about":[{"href":"https:\/\/courses.lumenlearning.com\/ivytech-collegealgebra\/wp-json\/wp\/v2\/types\/chapter"}],"author":[{"embeddable":true,"href":"https:\/\/courses.lumenlearning.com\/ivytech-collegealgebra\/wp-json\/wp\/v2\/users\/276"}],"version-history":[{"count":1,"href":"https:\/\/courses.lumenlearning.com\/ivytech-collegealgebra\/wp-json\/pressbooks\/v2\/chapters\/1845\/revisions"}],"predecessor-version":[{"id":2220,"href":"https:\/\/courses.lumenlearning.com\/ivytech-collegealgebra\/wp-json\/pressbooks\/v2\/chapters\/1845\/revisions\/2220"}],"part":[{"href":"https:\/\/courses.lumenlearning.com\/ivytech-collegealgebra\/wp-json\/pressbooks\/v2\/parts\/1825"}],"metadata":[{"href":"https:\/\/courses.lumenlearning.com\/ivytech-collegealgebra\/wp-json\/pressbooks\/v2\/chapters\/1845\/metadata\/"}],"wp:attachment":[{"href":"https:\/\/courses.lumenlearning.com\/ivytech-collegealgebra\/wp-json\/wp\/v2\/media?parent=1845"}],"wp:term":[{"taxonomy":"chapter-type","embeddable":true,"href":"https:\/\/courses.lumenlearning.com\/ivytech-collegealgebra\/wp-json\/pressbooks\/v2\/chapter-type?post=1845"},{"taxonomy":"contributor","embeddable":true,"href":"https:\/\/courses.lumenlearning.com\/ivytech-collegealgebra\/wp-json\/wp\/v2\/contributor?post=1845"},{"taxonomy":"license","embeddable":true,"href":"https:\/\/courses.lumenlearning.com\/ivytech-collegealgebra\/wp-json\/wp\/v2\/license?post=1845"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}