Basic College Mathematics (10th Edition)

Published by Pearson
ISBN 10: 0134467795
ISBN 13: 978-0-13446-779-5

Chapter 8 - Geometry - 8.2 Angles and Their Relationships - 8.2 Exercises - Page 542: 5

Answer

$\angle$ACB and $\angle$KOL $\angle$HNE and $\angle$ENF

Work Step by Step

The angles $\angle$ACB and $\angle$KOL are supplementary angles. $\angle$ACB + $\angle$KOL = 120$^{\circ}$ + 60$^{\circ}$ = 180$^{\circ}$ The angles $\angle$HNE and $\angle$ENF are supplementary angles. $\angle$HNE + $\angle$ENF = 77$^{\circ}$ + 103$^{\circ}$ = 180$^{\circ}$
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