The perpendicular bisector of line segement XY meets XY at O. If XO = 4.5 cm, then XY = _____ cm.
A
4.5
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B
6.5
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C
9
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D
18
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Solution
The correct option is C 9 The perpendicular bisector is perpendicular to the line segment and divides it into two equal halves. ∴XO=OY=4.5cm ∴XY=XO+OY =4.5+4.5 =9cm