# math

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?

1. Steve

well, ADB is also an isosceles right triangle with sides of 5.

So, its hypotenuse is AB = 5√2

that help?

2. Julie

Please, just help solve it, and don't give a tip. I still don't follow this.

3. Sarah

I solved it by myself . . . thanks fir the little tip. The answer is 25.

4. Julie

Thanks!

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