coordinate proof

I need help with the letter part. I do not understand it.

Name –‘– Date Class _

~Reteach
~ Introduction to Coordinate Proof continued
You can prove that a statement about a figure is true without knowing the side lengths.
To do this, assign variables as the coordinates of the vertices.

y

~

right triangle with
(0, d) leg lengths c and d

x

(0,0) (c,O)

Position each figure in the coordinate plane and give the coordinates
of each vertex.

i

I

I
I

, I i ! ! I
6. a square with side lengths k5. a right triangle with leg lengths 5 and t

i I

I

i
i

7. a rectangle with leg lengths e and w 8. a triangle with base b and height h

9. Describe how you could use the formulas for midpoint and slope to prove the following.

Given: ~HJK, R is the midpoint of HJ, S is the midpoint of JK.

Prove: RS II HK

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