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notsponge [240]
2 years ago
9

If you get the answer just give me the full answer please. No matter the length.

Mathematics
1 answer:
sammy [17]2 years ago
5 0

Answer:

CD = 4

Step-by-step explanation:

I believe you know the geometric mean for altitudes?

CD = √AD * DB = √8 * 2 = √16 = 4

If you are not aware of this theorem, then use the similarity of triangles.

ADC ~ CDB

AD/DC = CD/DB (cross-multiply)

CD^2 = AD*DB,

CD = √AD * DB = √8 * 2 = √16 = 4

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