Question

Find the measure of angle R
101°
39°
R

Answer 1

m<R = 31°

Explanation:

Arc QT = 39°

Arc PV = 101°

m<R = ½(arc PV - arc QT) => secant-secant exterior angle measure theorem

m<R = ½(101 - 39)

m<R = ½(62°)

m<R = 31°