Elementary Geometry for College Students (6th Edition)

Published by Brooks Cole
ISBN 10: 9781285195698
ISBN 13: 978-1-28519-569-8

Chapter 3 - Section 3.3 - Isosceles Triangles - Exercises - Page 146: 36


Given: 1. AB≅AC 4. $\angle$6≅$\angle$7 Reasons: 2. The base angles of an isosceles triangle are congruent. 3. Angles that meet to form a straight line are supplementary.

Work Step by Step

Statement 1 is given and statement two is true because ABC is an isosceles triangle. Statement 3 is true because the angles form straight lines which verifies statement 4.
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