7.2 Review Worksheet (continued)
19. Given: D ( − 1, 3), E ( − 3, − 1), F (3, − 1), G ( − 4, − 3), and H (5, − 3) Prove: △ DEF ~ △ DGH
20. Given: M (0, 10), N (5, 0), P (15, 15), Q (l0, − 10), and R (30, 20) Prove: △ MNP ~ △ MQR
Graph the image of each triangle after a dilation with the given scale factor. Then verify that the image is similar to the given triangle. 21. J ( − 2, 0) and K ( − 1, − l), and L ( − 3, − 2) with scale factor 3 22. M (0, 4), N (4, 2), and P (2, − 2) with scale factor 1 2 .
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