Want to use a coordinate proof to prove that inidsegment de of aabc is parallel to ac and half
the length of ac which is the best first step?
vie
a place the triangle on a coordinate grid such that vertex a is at the origin, and ac lies
on the x-axis.
b. place the triangle on a coordinate grid such that bc lies on the x-axis and ab lies on
the s-axis
c. place the triangle on a coordinate grid such that vertex b is at the origin.
d. place the triangle on a coordinate grid such that vertex a is on the y-axis, and vertex
c is on the x-axis.