−4−5+4+(−5)minus, 4, minus, 5, plus, 4, plus, left parenthesis, minus, 5, right parenthesis.

-10

Step-by-step explanation: For this problem we will solve the numbers in order.

-4 - 5 + 4 + (-5)

First subtract -4 - 5, which will give you -9. Then add -9 to 4, which will give you -5. Lastly add -5 plus -5, which will give you an answer of -10.

is there any attachment? what are the equations?

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