Question

Act practice question:

Answer 1

121

Explanation:

Triangles always equal 180

Lets call angle R x

x+59=180

Subtract 59 on both sides

x= 121

So angle R= 121

Answer 2

m<R = 121°

D.

Explanation:

According to triangle angles sum theorem, all angles in a triangle is equal to 180°

Given that <P + <Q = 59

<P + <Q + <R = 180°

59 + <R = 180

59 -59 + <R = 180 - 59

m<R = 121°