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 5 - Section 5.3 - Proving Triangles Similar - Exercises - Page 244: 20

Answer

Statements: 1. HJ and JF are perpendicular and HG and FG are perpendicular. 5. Triangle HJK and triangle FGK are congruent. Reasons: 2. Definition of perpendicular lines and right angles. 3. Right angles are congruent to each other. 4. Vertical angles theorem. 5. AA congruency theorem

Work Step by Step

Statements: 1. The first blank in the statements is always filled with what is given. 5. The last blank in the statements column is always filled with what we are trying to prove. Reasons: 2. We can conclude they are right angles since the two given lines are perpendicular. 3. All angles of the same measure are congruent, so we can conclude the right angles are congruent. 4. The two angles are vertical angles, so they are congruent by the vertical angles theorem. 5. When two pairs of angles in triangles are congruent, the two triangles are similar by the angle angle congruency theorem.
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