2 years ago

Theorem: A line parallel to one side of a triangle divides the other two proportionately.

Mathematics

1 answer:

Pepsi [2]2 years ago

3 0

Answer:

Step-by-step explanation:

C. BD= 20

Use similar triangles to write a proportion and then cross multiply to solve.

AE: AC = AD:AB

(ONCE YOU KNOW AB YOU CAN SUBTRACT AD FROM AB TO GET BD =20)

So, 15:40 = 12: AB=32. now 32-12 = 20 so BD = 20

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