Find the length of .
In the figure below, is a quadrilateral, where , is the midpoint of , is the midpoint of , , and cm. Determine .
The length of the line segment joining the midpoints of two sides of a triangle is equal to half the length of the triangle's third side. In , joins the midpoints of and .
forms a -- triangle. The length of a side that is opposite a angle in a right-angled triangle is equal to half the length of the hypotenuse.