This page discusses the different types of lines in geometry, including medians, bisectors, rays and more.
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NCTM Illuminations
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Definition of collinear points - three or more points that lie in a straight line
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Math Open Reference
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Definition of a transversal. A line that cuts across two or more (usually parallel) lines. Also perpendicular transversal
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Math Open Reference
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The Protractor described. Dual scales, baseline and origin.
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Math Open Reference
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A problem involving the calculation of spacecraft orbits.
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Math Open Reference
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Perpendicular definition: Perpendicular simply means 'at right angles'. A line is perpendicular to another if they meet at 90 degrees.
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Math Open Reference
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Area of a parallelogram. Definition and formula
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Math Open Reference
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Definition of the midpoint of a line segment.
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Math Open Reference
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Definition of locus - the shape formed by a set of points that satisfy given crtiteria
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Math Open Reference
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