Dilations. Vocabulary. Dilation: The image created by enlarging or reducing a figure. Center: The center of a dilation is a fixed point used for measurement when altering the size of the figure.
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Graph JKL with vertices
J (3,8), K (10,6), and L (8,2). Then graph its image J’K’L’ after a dilation with a scale factor of ½.
Graph V’Z’X’W’ Graph VZXW
V’ (-5, 5) V (-2,2)
Z’ (-2.5, 7.5) Z (-1, 3)
X’ (2.5, 6) X (1, 2.5)
W’ (5, 2.5) W (2, 1)
Y-coordinate of V’ = 5
Y-coordinate of V 2
Carleta’s optometrist dilates her pupils by a factor of 5/3. if her pupil before dilation has a diameter of 5 milimeters, find the new diameter after her pupil is dilated