To find the area of a triangle, you can use the formula:
\[ \text{Area} = \frac{1}{2} \times \text{base} \times \text{height} \]
In your case, you have a triangle with a base of 10 inches and a height of 10 inches.
Substituting these values into the formula:
\[ \text{Area} = \frac{1}{2} \times 10 , \text{in} \times 10 , \text{in} \]
\[ \text{Area} = \frac{1}{2} \times 100 , \text{in}^2 \]
\[ \text{Area} = 50 , \text{in}^2 \]
So, the area of the triangle is 50 in².