Geometry/Chapter 13

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Complementary angles are angles that the sum of their measures is equal to 90º.

File:Complementary angles|thumbnail|center </gallery> ]] Supplementary angles are angles that the sum of their measures is equal to 180º.



 90º              __|__               90º
_________________|__|__|____________________



Vertical Angles[edit]

Vertical Angles.jpg

In the above diagram, A and C are vertical angles, and B and D are vertical angles. Vertical angles are congruent.

Exercises[edit]

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