How do you work out the perimeter of an isosceles triangle

This is the answer.

Step-by-step explanation:

2 sides of an isosceles triangle are equal with the third side being of another length.

If we assume each of the equal sides to be 'a' and the third side to be 'b'

then perimeter would be

a + a+ b = 2a + b

m∠vru = 80°

m∠urw = 15°

step-by-step explanation:

explanation:

previous steps have made pa≅ pb ≅ st ≅ su. setting the compass width to ab allows you to make tu the same length. then δstu ≅ δpab by the sss congruence postulate, and ∠p ≅ ∠s by the reason cpctc.