Triangle ADB ~ Triangle ABC by AA.
Corresponding sides in proportion:
AD/AB = AB/AC
AD = 3 and AC = AD + DC = 3 + 9 = 12
3/AB = AB/12
AB^2 = 36
AB = 6
Alyssa Z.
asked • 03/20/21Find AB if AD = 3 and DC = 9.
In the figure, ∠ABC ≅ ∠ADB.
Find AB if AD = 3 and DC = 9.
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