Question

If the vertical angle P of an isosceles triangle PQR is 120", then find the angle angle Q.​

Answer 1

Answer:

P + Q + R = 180 (sum of all angles in triangle)

but P = 120

and in isosceles triangle Q=R as P is vertical angle for isoceles triangle

therefore

120 + Q + Q = 180

so Q = 30 degress