Geometry: Common Core (15th Edition)

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

Chapter 4 - Congruent Triangles - 4-1 Congruent Figures - Lesson Check: 7

Answer

He forgot about the angles.

Work Step by Step

In order to show that these polygons are truly congruent, Walter must also show that all the corresponding angles are congruent too.
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