Math 13900 Exam 3 A Fall 2010 1 Circle the LETTER of the correct answer for #1-3. (7 pts)1. Use the information given about the angles of triangles I, II, and III to determine which, if any, of the triangles are similar. I) 70and 4550′DDII) 6410 and 4550′′DDIII) 70and 6450′DD.I and II only.II and III only.I and III only.I, II and III. No similarity existsABCDE(7 pts)2. Using a broken ruler that is missing the first several inches, a student sets the ruler against a line segment such that the endpoints of the segment are at 53and 98164respectively. What is the length of the line segment? 121491618316. 4inches. 5inches. 4inches. 5inches. 4inchesABCDE(7 pts)3. One polyhedron has surface area 192 cm2and volume 128 cm3. Find the surface area and volume of the polyhedron’s image for a size change with scale factor 34. 2323232323.SA:108 cmV: 32 cm.SA: 48 cmV: 32 cm.SA: 48 cmV: 54 cm.SA: 36 cmV: 32 cm.SA:108 cmV: 54 cmABCDE
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