B. Number the sentences in an order to complete an indirect proof. Given: In A EFG, EF = FG Prove: mzE + 90° O Therefore the temporary assumption that mzE = 90° must be false. O But this contradicts the fact that the sum of the measures of the angles of a triangle is 180. L Assume temporarily that mzE = 90° O Then mzG = 90°, and mzE + mLF + mzG = 90 + m2F +90> 180 It follows that mLE # 90°
B. Number the sentences in an order to complete an indirect proof. Given: In A EFG, EF = FG Prove: mzE + 90° O Therefore the temporary assumption that mzE = 90° must be false. O But this contradicts the fact that the sum of the measures of the angles of a triangle is 180. L Assume temporarily that mzE = 90° O Then mzG = 90°, and mzE + mLF + mzG = 90 + m2F +90> 180 It follows that mLE # 90°
Elementary Geometry For College Students, 7e
7th Edition
ISBN:9781337614085
Author:Alexander, Daniel C.; Koeberlein, Geralyn M.
Publisher:Alexander, Daniel C.; Koeberlein, Geralyn M.
Chapter1: Line And Angle Relationships
Section1.2: Angles And Their Relationships
Problem 39E
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