Posted by **Anonymous** on Sunday, October 21, 2012 at 10:50pm.

The measure of angle B, the supplement of angle A, is four times the measure of angle C, the complement of angle A.

I need to find the measure of all angles and i have no idea of where to start, any help would be appreciated.

- Geometry -
**Steve**, Monday, October 22, 2012 at 4:43am
sure you have an idea. What property do supplementary angles have? They add to 180°. Complementary angles add to 90°.

so, B = 180-A

C = 90-A

B = 4C, so

180-A = 4(90-A)

180-A = 360-4A

3A = 180

A = 60

complement = 30°

supplement = 120°, which is 4 times 30°

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