Question

one angle of a triangle has a measure of 66°. the measure of the third angle is 57° more than 1/2 the measure of the second angle. the sum of the angle measures of a triangle is 180°. what is the measure of the second ange? what is the measure of the third angle?

Answer 1

The third angle is answered in the question. The second angle is 57 degrees. 

57+66= 123.

180-123
=57