I need help making a coordinate proof and it starts with if a quadralateral, then its diagnoles are perpendicular.

There are a number of ways to show whether a quadrilateral placed on a coordinate plane is a parallelogram or not. Here are a few ways:

1. Show that both pairs of opposite sides are congruent.  

2. Show that both pairs of opposite sides are parallel

3. Show that a pair of opposite sides are congruent and parallel

4. Show that the diagonals bisect each other.

In this activity, we will use the Distance, Midpoint and Slope Formulas that we learned in Algebra 1 to show congruent, bisected and parallel segments.

Midpoint, Slope and Distance Formula Review.

The midpoint of a segment in the coordinate plane with endpoints

Step-by-step explanation:

4.0 ft

step-by-step explanation:

4.0 ft

450 is the final answer! : )