Question

The area of rectangle ABCD is 140 and the length of AB is 20. If E is a point on AB, what is the area of triangle CDE? Answer is 70, but I'm not sure how I'm supposed to get that

Answer 1

Do you have an image?

Answer 2

We know that the bottom length of the triangle is 20, since AB is congruent to CD

Answer 3

Do they give you the lengths of BC or AD?

Answer 4

Nope.

Answer 5

its not that difficult, just draw an altitude from E to side DC

Answer 6

Is E at the middle of AB?o-o

Answer 7

do you know how i got the height = 7 ??
base , ofcourse =20