Prealgebra (7th Edition)

Published by Pearson
ISBN 10: 0321955048
ISBN 13: 978-0-32195-504-3

Chapter 9 - Section 9.1 - Lines and Angles - Exercise Set: 69

Answer

false

Work Step by Step

Complementary angles total $90^o$. $100^o+80^o\ne90^o$
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