Question

what is the value of c?
r
70°
q
p
c =

Explanation:

Step1: Use the property of isosceles triangle

Since \( RQ = RP \), \(\angle RQP=\angle PRQ = 70^{\circ}\)

Step2: Use the sum of interior angles of a triangle

The sum of interior angles of a triangle is \(180^{\circ}\). So \(c = 180^{\circ}-70^{\circ}-70^{\circ}\)

$$c=40^{\circ}$$

Answer:

\(40\)