Triangle a b c is shown with its exterior angles. line b a extends through point d. line a b extends through point e. line a c extends through point f. which angle’s measure is equal to the sum of the measures of ∠bac and ∠bca? ∠cba ∠cbe ∠dac ∠bcf

Angle’s measure is equal to the sum of the measures of ∠BAC and ∠BCA is ∠ CBE.

Step-by-step explanation:

Exterior Angle of a Triangle Property:

An exterior angle of a triangle is equal to the sum of the opposite interior angles.

Here,

The exterior angle of a triangle = ∠ CBE

For the given angles Sum,

∴ m∠ CBE = m∠ BAC  + m∠ BCA

Angle’s measure is equal to the sum of the measures of ∠BAC and ∠BCA is ∠ CBE.

it's CBE

Step-by-step explanation:

just took the quiz on edg

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