High School Math : How to find the area of a 45/45/90 right isosceles triangle
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Example Question #4 : 45/45/90 Right Isosceles Triangles
An isosceles right triangle has a hypotenuse of 
Not enough information to solve
In order to calculate the triangle's area, we need to find the lengths of its legs. An isosceles triangle is a special triangle due to the values of its angles. These triangles are referred to as 
Now we can calculate the area using the formula
Now, convert to feet.
Example Question #5 : 45/45/90 Right Isosceles Triangles
The base of a right isosceles triangle is 8 inches. The hypotenuse is not the base. What is the area of the triangle in inches?
To find the area of a triangle, multiply the base by the height, then divide by 2. Since the short legs of an isosceles triangle are the same length, we need to know only one to know the other. Since, a short side serves as the base of the triangle, the other short side tells us the height.
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