Question

In the diagram below,BC is an altitude of ABD. What is the length of CD ? If necessary, round your answer to two decimal places.
(picture below)

Answer 1

Could you add your picture?

Answer 2

Do you know your proofs?

Answer 3

Like the Pythagorean Theorem? and the ASA?

Answer 4

i do but the winter break kinda made me forget

Answer 5

Triangle \(\rm ABD\) is a right triangle, and \(\rm ACB\) is too.

Answer 6

oh ok so whats the answer?

Answer 7

BC = The root of ( CD x AC)
9 = the root of 5 CD
81 = 5 CD
CD = 81/5 = 16,02 cm

Answer 8

so 16.02?