Question

One of the base angle of an isosceles triangle is 60° the vertical angle is what?

Answer 1

Then the vertical angle should be I think 60°........

It's not conform the is correct but I had tried it......

Hope it helps.......

Answer 2

Answer:

60

Step-by-step explanation:

Let the angles be A, B and C

Triangle ABC is isosceles, where BC is the base

AB = AC

angle B = angle C  (Angles opp. to equal sides)

Angle of base = 60

B = C = 60

A + B + C = 180  (Angle sum property of a triangle)

60 + 60 + A = 180

A = 180 - 120

A = 60