Write a coordinate proof. Prove quadrilateral WXYZ, having vertices W(-5, 6), X(-1, 10), Y(1, 4), and Z(-2, -3) is a trapezoid.

Answer 1

Answer 2

Vectors: WX = <4, 4>, XY = <2, - 6>; YZ = <- 3, - 7>; ZW = <- 3, 9>

So, XY = -2/3ZW. This means that XY II ZW ; but WX not II YZ