posted by charles .
In isosceles right triangle ABC, point D is on hypotenuse BC such that AD is an altitude of triangle ABC and DC = 5. What is the area of triangle ABC?
well, ADB is also an isosceles right triangle with sides of 5.
So, its hypotenuse is AB = 5√2
Please, just help solve it, and don't give a tip. I still don't follow this.
I solved it by myself . . . thanks fir the little tip. The answer is 25.