Elementary Geometry for College Students (7th Edition)

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

Chapter 4 - Review Exercises - Page 218: 35a

Answer

Rhombus

Work Step by Step

When we reflect isosceles triangle $ABC$ across line $BC$ we end up with a rhombus. The congruent sides would be $AB=AC=A'B=A'C$, with one diagonal 'drawn' in - diagonal $BC$.
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