- A9
- B6
- C7.5
- D5
Step-by-Step Solution
By the angle-bisector theorem, BD : DC = AB : AC = 8 : 12 = 2 : 3. So BD = (and DC = 9).
Answer: B) 6
In triangle ABC, AB = 8, AC = 12 and BC = 15. The bisector of angle A meets BC at D. What is the length of BD?
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