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Personal Evaluate: Homework and Practice Math Trainer Online Homework . Hints and Help 1 . How can you construct a line perpendicular to . Extra Practice line f that passes through point P using paper folding? You write a line 2. Check for Reasonableness How can you use 3 . Describe the point on the perpendicular bisector a ruler and a protractor to check the construction of a segment that is closest to the endpoints of the in Elaborate Exercise 11? segment. Represent Real-World Problems A field of soybeans is watered by a rotating irrigation system. The watering arm, CD, rotates around its center point. To show the area of the crop of soybeans that will be watered, construct a circle with diameter CD. Use the diagram to find the lengths. BP is the perpendicular bisector Q of AC. CQ is the perpendicular bisector of BD. AB = BC = CD. 5. Suppose AP = 5 cm. What is the length of PC? 6 . Suppose AP = 5 cm and BQ = 8 cm. What is the length of QD