# geometry

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Is it always true, sometimes true, or never true that two complementary angles have a common vertex?

• geometry -

I believe that it is always true. Complementary angels add up to 90 degrees.

• geometry -

Wait, sometimes true.

• geometry -

Sometimes. The angles can be anywhere in a figure as long as they add up to 90 degrees. Consider for example the acute angles of a right triangle

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