Area of a triangle $\"\"$ .

Length of one of the two equal sides is $\"\"$ .

The equal sides(legs) of a right triangle can be used as the base and height to calculate the area of the triangle.

Area of an isosceles right triangle $\"\"$ .

Substitute the corresponding values in area formula.

$\"\"$

Thus, the area of an isosceles right triangle is $\"\"$ .

The area of an isosceles right triangle is $\"\"$ .