#### Answer

$\angle ADC$ and $\angle BDC$ are a linear pair.

#### Work Step by Step

A linear pair is two adjacent angles whose noncommon sides are opposite rays.

Published by
Prentice Hall

ISBN 10:
0133281159

ISBN 13:
978-0-13328-115-6

$\angle ADC$ and $\angle BDC$ are a linear pair.

A linear pair is two adjacent angles whose noncommon sides are opposite rays.

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