Thread: Coordinate geometry

How to find s?

Use the fact that all of the sides are of equal length. You can find this length from the two given points.

ITs impossible...you will have 2 unknowns

Originally Posted by Thorpelizts

ITs impossible...you will have 2 unknowns

Of course, it is not impossible if you know what you are doing.

Here is a start.

Let . Then is the midpoint of the diagonal so:

solve for .

Then

Now you do some work.

A graphical procedure gives a quick solution.

answers R (1,4) S (-11,5)
area rhombus 2*29^1/2*116^1/2
length of rhombus side 145^1/2
equation of PR y=-5/2x + 13/2