<h3><em><u>To find the area of a triangle, multiply the base by the height, and then divide by 2.</u></em><em> The division by 2 comes from the fact that a parallelogram can be divided into 2 triangles.</em> <em><u>For example, in the diagram to the left, the area of each triangle is equal to one-half the area of the parallelogram.</u></em></h3>