Find the coordinates of the midpoint of a segment having the given endpoints. Q(5, 10), R(8, 2)

A(-1.5, 4)
B(7.5, 5)
C(-3, 8)
D(6.5,6)

D(6.5, 6)

Step-by-step explanation:

8-5=3/2=1.5 5+1.5=6.5

10-2=8/2=4 2+4=6

b) k’(6, 4); l’(3, 3)

step-by-step explanation:

a 270° clockwise rotation maps every point (x, y) to (y, -x). (it negates the x-coordinate and then switches it and the y-coordinate.)

this means the endpoints of the side congruent to kl, k' and l', would be mapped as:

k'(-4, 6)→(6, 4)

l'(-3, 3)→(3, 3)