#### 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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Published by
Brooks Cole

ISBN 10:
9781285195698

ISBN 13:
978-1-28519-569-8

Rhombus

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