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Archive Home > 2009 > February > 08 > A jaw-dropping ride — batteries included

A jaw-dropping ride — batteries included

By Warren Brown / The Bulletin
February 8, 2009

Let us begin with definitions.

First, there is the circle. It is round. It has circumference, the outer limits of its roundness. It has a center and a radius, the latter being the straight-line distance from the circle’s center to its circumference.

Next, there is the tangent. It is a....

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