Question

C is the midpoint of AD. B is the midpoint of AC. AC=13. What is the length of BD?

Answer 1

19.5

Explanation:

If C is the midpoint of AD, and AC=13 then AD = 2 x 13 = 26

If B is the midpoint of AC, then AB = 13 ÷ 2 = 6.5

So BD = AD - AB = 26 - 6.5 = 19.5