I just need help with this problem: Ben states the measure of Angle A is 50°, because the sum of supplementary angles is 180°. What is the mistake in Ben’s logic? Correct his erroneous answer. Angle b is: 70degrees
angle c is: 130
he thinks angle A is 50 degrees.

i think the answer is angle c is : 130

Step-by-step explanation:

6 on both sides and twelve on the top and the bottom

step-by-step explanation:

proofs involving isosceles triangles often require special consideration because an isosceles triangle has several distinct properties that do not apply to normal triangles.(more about triangle types) therefore, when you are trying to prove that two triangles are congruent, and one or both triangles, are isosceles you have a few theorems that you can use to make your life easier.

step-by-step explanation:

an isosceles triangle has two congruent sides and two congruent angles. the congruent angles are called the base angles and the other angle is known as the vertex angle. ∠bac and ∠bca are the base angles of the triangle picture on the left. the vertex angle is ∠abc