Answer:
x = 2
Step-by-step explanation:
x is the height of these triangles. Thus, we know all three sides of either triangle: height = x; base = 8/2, or 4; and hypotenuse √20.
Using the Pythagorean Theorem, we find x as follows:
x^2 + 4^2 = 20, or
x^2 = 4. Then x must be 2.
x = 2
