Geometry
posted by Anonymous on .
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.

sure you have an idea. What property do supplementary angles have? They add to 180°. Complementary angles add to 90°.
so, B = 180A
C = 90A
B = 4C, so
180A = 4(90A)
180A = 3604A
3A = 180
A = 60
complement = 30°
supplement = 120°, which is 4 times 30°