# Angle Pairs

## Understand complementary angles as angles whose sum is 90 degrees and supplementary angles as angles whose sum is 180 degrees.

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Geometry Definitions and Introduction to Proof

Supplementary Angles
Teacher Contributed
In the following diagram, $$m\angle ABC = 30.0^\circ$$. Find $$m\angle DBE$$.
B
A
C
D
E
qid: 100046
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