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10-01-2020
Mathematics

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

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

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10-01-2020

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.

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