Question

Determine whether BC//DE.
AD=15, DB=12, AE=10, and EC=8.

Answer 1

Check if \(\dfrac{AD}{DB}=\dfrac{AE}{EC}\)

Answer 2

ok hold up

Answer 3

shouldn't it be AD/AE=DB/EC

Answer 4

Well they're the same aren't they

Answer 5

well yeah but i got 120=120

Answer 6

By converse of side splitter theorem,
if the line cuts two sides of a triangle proportionally, then it is parallel to the other side

Answer 7

since you got AD/DB = AE/EC,
DE must be parallel to BC

Answer 8

so then i did get it right

Answer 9

yup ! good job !!