Question

Find the measures of the angles of a triangle if they are in a ratio of 2:2:5.
A. 40°, 40°, 100°
B. 20°, 20°, 140°
C. 60°, 60°, 60°
D. 30°, 30°, 120°

Answer 1

set the ratios equal to 180
\[2x+2x+5x=180\]
\[9x=180\]
x=20

so 2(20):2(20):5(20)

Answer 2

40:40:100