Elementary Geometry for College Students (7th Edition) Clone

Published by Cengage
ISBN 10: 978-1-337-61408-5
ISBN 13: 978-1-33761-408-5

Chapter 2 - Review Exercises - Page 132: 38

Answer

In an indirect proof, we begin by saying that the statement that is said to be false is true. (Later in the proof, by proving this to be illogical, we complete the proof.) Thus, the first sentence should be: let us assume that the two angles of a triangle are congruent.
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