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perpendicular bisector

The perpendicular bisector of a line segment AB is the straight line perpendicular to AB through the midpoint of AB.


Curling   Reference library

Morris MOTT

Berkshire Encyclopedia of World Sport (3 ed.)

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Subject Reference
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Social sciences, Society and culture
3,641 words complete all of its throws. They forfeit the match if they fail to do so. Curling Rinks A standard curling rink is between 14.5 and 15 feet wide and at least 146 feet long. As each end is played, only 132 feet of the 146 feet are in play. A centerline bisects the length of the ice, and four perpendicular lines cross the width of the ice at both ends. ( See figure 1 .) The house is centered where the tee line intersects the centerline. The stone must be released before its leading edge touches the near hog line. If a player is still in contact with a stone...