Question

Triangle ABC has the length of side AB as 10 centimeters. E is a point on AB and D is a point on BC. Points E and D are joined using a straight line. The measure of segment BD is 5 centimeters. The measure of angle BAC is equal to the measure of angle

If the area of triangle ABC is 240 cm2, the area of triangle BDE is _____ cm2.

Answer 1

tips?

Answer 2

This is a similar triangles problem, so you'll want proportions. So first off, can you show that triangle ABC is similar to triangle BDE?

Answer 3

5 seems to be seem similar to 10

Answer 4

BD seems to corresponds with AB

Answer 5

Correct. Since area is proportional to the square of the side lengths, that means the area of the smaller triangle would be...

Answer 6

ahh

Answer 7

I think I have this one

Answer 8

the area is 60

Answer 9

Right on.

Answer 10

last one