Creating Parallel and Perpendicular Lines

Your task

Using the geogebra graphing calculator, graph line segments AC and BD A(-2, 5) C(3, 8) B(-3, 7) D(?,?) Find the coordinates for D, so that your line segments are parallel.

Graph points

How do you know your line segments are parallel?

Using the same coordinates for points A, C and B, find the coordinates for D so that your line segments are perpendicular.

How do you know your line segments are perpendicular?