13 GUEST, GUEST Katherine uses A ABC, where DE I| AC to prove that a line parallel to one side of a triangle divides the other two sides proportionally. A part of her proof is shown. E A Statements Reasons 1. DE |I AC |1. Given 2. 4 BDE = - BÁC and Z BED = 4 BCA 2. 3. A BAC~ A BDE 3. |4. 器=寵 ВА BD BC |4. 5. ВА %3D BD + DA; BC %3D BЕ + ЕC 5. Segment addition postulate 6. б.
13 GUEST, GUEST Katherine uses A ABC, where DE I| AC to prove that a line parallel to one side of a triangle divides the other two sides proportionally. A part of her proof is shown. E A Statements Reasons 1. DE |I AC |1. Given 2. 4 BDE = - BÁC and Z BED = 4 BCA 2. 3. A BAC~ A BDE 3. |4. 器=寵 ВА BD BC |4. 5. ВА %3D BD + DA; BC %3D BЕ + ЕC 5. Segment addition postulate 6. б.
Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter4: Polynomial And Rational Functions
Section4.6: Variation
Problem 15E
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