Elementary Geometry for College Students (5th Edition)

Published by Brooks Cole
ISBN 10: 1439047901
ISBN 13: 978-1-43904-790-3

Chapter 5 - Section 5.3 - Proving Triangles Similar - Exercises - Page 240: 11

Answer

The blanks for the reasons are below: 1. Given 2. Given in the diagram. (When two lines are perpendicular, they form right angles.) 3. Right angles are always congruent to each other. 4. Opposite angles are always congruent for parallelograms. 5. AA (When two angles are congruent, the triangles are similar.)
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