ABC is an isosceles triangle with vertex angle C. if m<C=40, then find m<A

Answer 1

Since triangle ABC is isosceles, the base angles will be congruent. Let x represent the measure of angle A. Since angle C is the vertex angle, we have:

x + x + 40 = 180

2x + 40 = 180

2x = 140

x = 70

So, angle A measures 70 degrees.

Answer 2

isnt it 60

Answer 3

Apologies for the mistake. You are correct.

Since triangle ABC is isosceles, the base angles will be congruent. Let x represent the measure of angle A. Since angle C is the vertex angle, we have:

x + x + 40 = 180

2x + 40 = 180

2x = 140

x = 70

So, angle A measures 70 degrees.