Answer
$\angle B$
Work Step by Step
We can see that both $\triangle CAB$ and $\triangle RPB$ share $\angle B$.
Geometry: Common Core (15th Edition)
by Charles, Randall I.
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 268: 12
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