Question

Angle 4 is twice the size of angle 6, find angle 4.

m∠4=

Answer 1

We will represent the larger angle with x and the smaller angle with y.

2x+2y=360
x=2y

2(2y)+2y=360

4y+2y=360

6y=360

y=60

and since the bigger angle is twice the small angle y. The angle is 120