Question

the Vertical angle of an isosceles triangle is 80 degree. Find its base angle. ​

Answer 1

Answer:

50 degrees

Step-by-step explanation:

The vertical angle = 80 degrees. The first thing you have to do is remember that sum of angles of triangle is 180 degrees. The second thing is that opposite angles of equal angles are equal.

vertical angle + isosceles angle 1 +isosceles angle 2

80+2x=180(x= base isosceles angle)

100=2x

x=50 degrees