Given that is a parallelogram, find the area of the triangle .
Step 1: Find the length of .
Opposite sides of a parallelogram are equal in length.
Since , we know that is bisected into two equal lengths.
Step 2: Find the height of .
The height of the parallelogram is the same as the height of the triangle (cm), corresponding to base of the triangle.
Step 3: Find the area of .
Use the formula for the area of a triangle, with as the base and cm as the height.