Determine whether or not ABCD, which has vertices A(-2,4), B(-4,1), c(2,0), and D(4. 3) is a parallelogram. A (-2,4) D (4, 3) B(- 4,1) c(2,0) 5 4 3 -2 -1 -2

2. In quadrilateral PQRS, the coordinates are P(0, 0), Q(a + c, 0), R(2a + c, b), and S(a, b). How can you use coordinate geometry to show that the diagonals are perpendicular? Find the slopes of PQ and RS and show that their product is 1. Apply the Distance Formula to show that opposite sides PQ and RS are congruent. Find the slopes of PR QS and show that their product is -1. and PS QR are congruent. and Apply the Distance Formula to show that opposite sides MacBook Air

3 Triangle ABC has vertices with coordinates of A (1, 9 ) B( 1,12 ) and C( 7, 9).(a) Draw ABC on the given grid.

Put these camp coordinates on the grid and find their mid points. Camp 1: (3,3) Camp 2: (6,8) Camp 3: (1,10) Camp 4: (-5,-3)