1. A diagonal of a square has length 8. What is the perimeter of the square?

Question

2. Find the altitude of an equilateral triangle if each side is 10 units long

Answer 1

Pythagorean Theorem

1. Side^2 + Side^2 = diagonal^2

2S^2 = 8^2 Solve for S

2. 5^2 + A^2 = 10^2

Solve for A.