Scale factor and Dilations

Master scale factor & dilations! Practice geometry transformations.

General review - scale factor Match to complete the sentence. When a scale factor is greater than 0, but less than 1 ... the object or distance gets smaller. When a scale factor is greater than 1 ... the object or distance gets bigger. When a scale factor is equal to 1 ... the object or distance remains exactly the same. The scale factor is ... the number we use to multiply the length of an object or distance What are the coordinates of a point S (3, -2) after a dilation with a scale factor of 4 about the origin? (12, -8) (-12, -8) (-12, 8) (-3 1 What are the coordinates of a point Y (-2, 5) after a dilation with a scale factor of 2.5? (-0.8, 2) (-5, 12.5) (0.8, -2) (5, -12.5) What are the coordinates of a point X (4, -8) after a dilation with a scale factor of 0.5? (-8, 16) (8, -16) (-2, 4) (2, -4) What is the scale factor for the image shown below? The pre-image is in red and the image is in blue. 2 3 -3 4 The coordinates of a point change as follows during a dilation: (-6, 3) ----> (-2, 1)What is the scale factor? 3 -3 1 -1 The coordinates of a point change as follows during a dilation:(4, -9) ----> (16, -36)What is the scale factor? 4 -4 1 -1 Quadrilateral EFGH is a dilation of quadrilateral ABCD. What is the scale factor from ABCD to EFGH? 2 3 1 1 Fill in the blank below. The measure of side AB is 2.5 centimeters long. How do the angles of EFGH compare to the original angles? They are 3 times larger. They are 1 of the original angles. They are equal. Fill in the blank. The side lengths of EFGH are 3 times larger than ABCD. Fill in the blank. The perimeter of EFGH is 3 times larger than the perimter of ABCD. Fill in the blank. The area of EFGH is 9 times larger than the area of ABCD. Find the height of the palm tree. 20 feet 26 feet 22.5 feet Point A ( 10, -5) becomes A' (2, -1). If point B (25, -15) undergoes the same dilation, what will its new coordinates be? (-5, 3) (125, -75) (17, -11) (5, -3)