Write a coordinate proof for the quadrilateral determined by the points A(2,4), B(4, -1), C(-1, -3), and DC-3,2).
3.
Prove that ABCD is a parallelogram.

Apiling for a high-rise building is pushed by two bulldozers at exactly the same time. one bulldozer exerts a force of 1250 pounds in a westerly direction. the other bulldozer pushes the piling with a force of 2650 pounds in a northerly direction. what is the direction of the resulting force upon the piling, to the nearest degree? a. 65 n of w b. 25 n of w c. 45 n of w d. 35 n of w