Posted by **Millie** on Friday, February 10, 2012 at 5:05pm.

Angle C and Angle D are vertical angles. The conclusion is that angle C and angle D are complementary. Which is a counterexample of this conclusion.

* 2 vertical angles which are not complementary

or

* 2 complementary angles which are not vertical

- MATH -
**Henry**, Sunday, February 12, 2012 at 12:05pm
Ans. = A.

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