| ABCD is a parallelogram. The line segment EF is parallel to BD. Prove the area of the triangle ABE is equal to the area of the triangle ADF. |  |
Transformation of a Triangle
| Run Applet |
| ABCD is a parallelogram. The line segment EF is parallel to BD. Prove the area of the triangle ABE is equal to the area of the triangle ADF. | |