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alfers101
Prove that the points A(0,-4) B(3,-1) C(-2,4) and D(-5,1) are vertices of a rectangle and find its perimeter.
The points form a rectangle if the segments created by those points satisfy the properties of a rectangle
hmm. what do u think is the formula?
Find the slope of the line forming by two points. they must be parallel
That is for the proving part.
First find the equations forming by two points
1. Prove that it is a parallelogram 2. Prove that the diagonals bisect each other 3. Prove that opposite sides are congruent. 3. If a figure is a parallelogram, and if its opposite sides are congruent, and if its diagonals bisect each other, then that figure must be a rectangle.