CD is an altitude of ACB. What is the length of AD? ОА. 10 ОВ. 20 OC. 12 OD. 11

asked Mar 21, 2021 82.3k views

2 votes

CD is an altitude of ACB. What is the length of AD?

ОА. 10
ОВ. 20
OC. 12
OD. 11

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4 votes

Answer:

D. 11

CD is half the length of DB

Triangle ACD must be proportional to Triangle BCD

AD must be half the length of CD

Therefor, your answer is 11.

Rafik answered Mar 25, 2021

by Rafik

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