My mom said this answer is wrong, she said the correct answer is as) -3/5 is she right,

D -3/5

Step-by-step explanation:

because it is divided in five. also it is in the negative zone. also it is to the left ofzero

answer: 43/157

this is the answer and if you try to prove me wrong your a meanie

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