Pre-image ABCD is dilated to be image A′B′C′D′ . The origin is the center of dilation. What scale factor is used to create the dilation? Enter your answer in the box. coordinate plane with two squares. square abcd has vertices a at (1, 2), b at (2, 2), c at (2, 1), and d at (1, 1). square a prime b prime c prime d prime has vertices a prime at (3, 6), b prime at (6, 6), c prime at (6, 3), and d prime at (3, 3).