The length of the median to the hypotenuse of a right triangle is half the length of the hypotenuse. given: mno is a right triangle with right . p is the midpoint of . prove: op = plan: place the right triangle in the coordinate plane with the vertex of the (a) at the origin and the (b) along each axis. since midpoints will be involved, use (c) to name the coordinates for points m and n. use the (d) formula to find the coordinates of p. to compare lengths, use the (e) formula. select the best phrase to enter in place of blank (c) in the above plan. a. multiples of 2 c. legs b. midpoint d. right angle