Complete the coordinate proof for the quadrilateral determined by the points A(-3,-1), B(-1,-6), C(-6, -8), D(-8, -3).
Prove that ABCD is a parallelogram.
=
6+1
Slope of AB =
-1+3
-8+6
Slope of BC =
-6+1
-3+8
Slope of CD =
-8+6
-1 +3
Slope of AD =
-3+8
The slopes of opposite sides (select)v equal. This means that opposite sides are (select)
ABCD (select) y a parallelogram.
V, SO