Answer
An angle is a straight angle if and only if it measures 180.
Work Step by Step
A measure of 180 is the definition of a straight angle, so the conditional and its converse are both true.
Geometry: Common Core (15th Edition)
by Charles, Randall I.
Published by
Prentice Hall
ISBN 10:
0133281159
ISBN 13:
978-0-13328-115-6
Chapter 2 - Reasoning and Proof - 2-3 Biconditionals and Definitions - Got It? - Page 100: 3
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