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Geometry Name: _________________________________ Worksheet 4 - 2 Date: __________________ Period:__________ For numbers 1- 4, ∆ABC is similar to ∆DEF. B 1. Fill in the following ratios with the corresponding sides. y 8 AB BC AC DE 2. What is the scale factor? A C 16 E Scale Factor = __________ 9 x D F 12 3. Using the scale factor, find x and y. x = ________ y = ________ 4. Recall that in similar triangles the angles are congruent. Find mA . mD ________ For numbers 5 - 9, quadrilateral ABCD is similar to quadrilateral EFGH. 5. Fill in the following ratios with the corresponding sides. 4 B C 5 AB BC AD EF GH A 6. What is the scale factor? Scale Factor = __________ D 8 G F 2 7. Using the scale factor, find AB, HG, and FG. H 6 E AB = ______, HG = ______, and FG =______ 8. Find the perimeter of ABCD and EFGH. ABCD = __________________ EFGH = __________________ 9. a) Find the ratio of the perimeter ABCD to perimeter EFGH. ratio = __________________ b) What do you notice about the ratio? For problems 10 – 11, each pair of polygons is similar. Find x and y. 10. x = _______, y = _______ 11. x = _______, y = _______ x 18 30 24 20 y 24 18 8 14 28 y x