Look at the photo to understand more 19. How many yellow-collared macaws would
have a combined mass of 1 kilogram?

20. Is the combined
mass of two red-footed macaws and three blue and gold macaws closer to 3 kilograms or 4 kilograms? Explain.

21. Which macaw has a mass closest to 1 kilogram?

BEST ANSWER GETS BRAINLESST A FOLLOW AND A LIKE AND 5 STARS ON THERE ANSWER( you don't have to answer all)

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