Find the area of the triangle, whose vertices are (a,c+a), (a,c) and (-a,c-a).

Explanation

To find the area of the triangle with vertices at the points \( (a, c + a) \), \( (a, c) \), and \( (-a, c - a) \), we can use the formula for the area of a triangle given its vertices \((x_1, y_1)\), \((x_2, y_2)\), and \((x_3, y_3)\):

\[ \text{Area} = \frac{1}{2} \left| x_1(y_2 - y_3) + x_2(y_3 - y_1) + x_3(y_1 - y_2) \right| \]

### Step 1: Assign the vertices
Let:
...