I am having a difficult time trying to understand these equations. I normally help my son to the best of my knowledge, but these problems i am at a lost. I am not sure how to use the formula h^2=h^2+b^2?? Can you help me?

Christian loner Period: Name: Ist Chapter 8 Review Geometric Mean Find x Find KM Geometric Mean: 8 a _x x 23 x = Vab x = the geometric mean between a and b. X = KM = Find all variables Work: X = Y= Pythagorean Theorem and the Converse: Which set could represent Determine whether the measures can Find X a right triangle? be the measures of the sides of a a. 5, 12, 13 triangle. If so, classify the triangle as 26 b. 6, 7, 13 acute, obtuse, or right. CO N C. 18, 40, 41 d. 6, 10, 20 2, V8, V12 6+16