Question

2150
G. The sum of the measures of the angles of all triangles is 180°. If one angle of the triangle
measures 45 , and the other two angles are equal, what is the measure of each of the other two
angles?
Write the equation and solve:

Answer 1

angleA + (2angle)= 180
45 + 2angleB = 180
-45 -45
2angle/2 = 135/2
angle = 67.5degrees
proof:
45+67.5+67.5= 180