Unit 7 Sections 7-4 to 7-5

Question 1

Geometric Mean?

Answer 1

The geometric mean of two positive numbers a and b is the positive number x that satisfies a/x = x/b. So, x^2 = ab and x = radical ab.

Question 2

If AX/XB = CY/YD?

Answer 2

Then segment AB and segment CD are divided proportionally by X and Y, respectively.