The blue triangle is formed by connecting vertices with points that divide opposite sides in thirds.[br]The red points are the midpoints of the sides.[br]When the angle formed by P is zero you have a triangle. [br]When the angle is 180˚ you have three parallelograms around the blue triangle.[br]Compare the area of the parallelograms to the area of the blue triangle.[br]Compare the area of the blue triangle to the big triangle.