Question

Determine whether parallelogram JKLM with vertices J(-1, -1), K(4, 4), L(9, -1) and M(4, -6) is a rhombus, square, rectangle or all three.

Answer 1

You part of keystone?

Answer 2

what do you think?

Answer 3

\[AB = \sqrt{\left( x _{B} - x_{A} \right)^2 + \left( y _{B} - y_{A} \right)^2}\]
Use this formula to find JK and KL, and determine if they are of the same length

Answer 4

I ended up with JK = 5√2
Still working on KL

Answer 5

They're equal

Answer 6

It's all three, check your message box for why.

Answer 7

Sorry it should be JK vector dot LK vector, but you'll get the same answer anyway