Answer
$\angle$P is a right angle.
Work Step by Step
$\angle$H+$\angle$L=180
Therefore,
$\frac{1}{2}$$\angle$H+$\frac{1}{2}$$\angle$L=90
If two angles in a triangle are complimentary, then the third angle must be a right angle.
Elementary Geometry for College Students (5th Edition)
by Alexander, Daniel C.; Koeberlein, Geralyn M.
Published by
Brooks Cole
ISBN 10:
1439047901
ISBN 13:
978-1-43904-790-3
Chapter 4 - Section 4.1 - Properties of a Parallelogram - Exercises - Page 186: 31
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