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Sedbober [7]
3 years ago
10

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

Mathematics
1 answer:
Simora [160]3 years ago
7 0

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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Answer:

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Step-by-step explanation:

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we know that

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see the attached figure

therefore

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