# math

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. 0
2. 7
1. well, ADB is also an isosceles right triangle with sides of 5.

So, its hypotenuse is AB = 5√2

that help?

1. 0
posted by Steve
2. Please, just help solve it, and don't give a tip. I still don't follow this.

1. 0
posted by Julie
3. I solved it by myself . . . thanks fir the little tip. The answer is 25.

1. 0
posted by Sarah
4. Thanks!

1. 0
posted by Julie

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