Exercise 4 Page 225

To graph the polygon, let's plot the given vertices and then connect them.

When a figure is rotated 90^(∘) counterclockwise about the origin, the coordinates of the image's vertices will change in the following way.

(a,b)→ (- b,a) Let's find the coordinates of the image according to the rule.

(a,b)	(- b,a)
J(-1,1)	J'(-1,-1)
K(3,3)	K'(-3,3)
L(4,-3)	L'(3,4)
M(0,-2)	M'(2,0)

Finally, we can plot the image J'K'L'M'