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9. Write a reflection rule that maps each
triangle to its image.
a. J(1, 0), K(-5, 2), L(4, -4) and
J'(-9, 0), K'(-3, 2), L'(-12,-4)
b. P(8, 6), Q(-4, 12), R(7, 7) and
P'(8, -20), Q'(-4,-26), R'(7, -21)