Apillow is in the shape of a regular pentagon. the front of the pillow is made form 5 pieces of fabric that are congruent triangles. each triangle has an area of 22in squared. what is the area of the front of the pillow? pleeaass

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

it has to have an angle of 90 degrees