Area of triangle help?
ABC and DEC are right triangles with right angles B and E, respectively. If DE = 3, EC = 9, and BE = 3, find the area of triangle ABC.
Please show me how to solve..
- JackLv 73 years ago
That one's easy. Ratio and proportion. Find the area of DEC. Then the area of ABC is just proportional to DEC by the ratio of AB to DE. Done.