Geometry: Common Core (15th Edition)

Published by Prentice Hall
ISBN 10: 0133281159
ISBN 13: 978-0-13328-115-6

Chapter 4 - Congruent Triangles - 4-7 Congruence in Overlapping Triangles - Practice and Problem-Solving Exercises - Page 270: 21

Answer

$\angle A \cong \angle E$

Work Step by Step

We are given that $\overline{AC} \cong \overline{EC} $ and $\overline{CB} \cong \overline{CD} $ According to the reflexive property of congruence, we have $\angle C \cong \angle C$ Apply Theorem of SAS congruence: $\triangle ACD \cong \triangle ECB$ Therefore, we have $\angle A \cong \angle E$
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