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Definition and properties of a cube.

Finding the midpoint of a line segment given the coordinates of the endpoints

Definition of 'Angle Bisector' and a general discussion of bisection. Link to 'line bisector'

Great (and short)Powerpoint Presentation on Points, Lines, and Planes.

Definition of collinear points - three or more points that lie in a straight line

Definition of a transversal. A line that cuts across two or more (usually parallel) lines. Also perpendicular transversal

The Protractor described. Dual scales, baseline and origin.

A problem involving the calculation of spacecraft orbits.

Definition of a point

Perpendicular definition: Perpendicular simply means 'at right angles'. A line is perpendicular to another if they meet at 90 degrees.

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