Question

if the measure of an angle is twice the measure of its supplementary angle then the measure of the angle is (a) 60 (b) 90 (c) 120 (d) 130​

Answer 1

Answer:

c

Step-by-step explanation:

60°

supplementary angles sum=180

according to question:

say measured angle is some x°

then

x°+x°/2=180

next step

(3/2)x°=180

next step

x°=120°