A plumber had 3 plastic pipes that were each 6 feet long. He used all of the 3 pipes and cut them into sections that
each foot long. How many sections of pipe did the plumber have in all?

18 sections of pipe in all.

Step-by-step explanation:

The question above is answered below.

The plumber has 3 plastic pipes each is 6 feet long. He cut each pipe into 1 foot. Thus:

3 × 6 = 18 sections of pipe.

Therefore, the plumber has 18 sections of pipe in 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