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Name Drew Brakebush Date Period Score 6.4 A In Exercises 1-2, use the graph of AABC. B 1. Find the coordinates of the midpoint D of AB, the midpoint E of CB, and the midpoint F of AC. -5 x midpoint. D = (- 2, 2 ) midpaint E = (-1,-2) -3 midpoint F= (- 4 , -1 ) 2. Graph the midsegment triangle, ADEF. 3. A building has the shape of a pyramid with a square base. The midsegment parallel to the ground of each triangular face of the pyramid has a length of 58 feet. Find the length of the base of the pyramid. 2 ( 58 ) = 106 58 ft 106 f+ In Exercises 4-9, use AQRS where A, B, and C are the midpoints of the sides. Q A 4. When AB = 16, what is OS? 32 5. When SR = 68, what is CA? B 34 S 6. When SR = 46, what is BR? 23 7. When CA = 3x - 1 and SR = 5x + 4, what is CA? 8. When OS = 6x and CS = 5x - 8, what is AB? 9. When OR = 5x + 2 and CB = 2x + 5, what is AR? Copyright @ Big Ide