GEOMETRY GLOSSARY

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Title Description
Lateral The flat sides of a geometric solid are generally termed the Lateral sides or Lateral surface area.
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Lateral Surface Area The Lateral Surface Area of a geometric solid is the expanse of the flat sides (or smooth sides).
Be careful, some solids have faces that are termed bases and not lateral surfaces.
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Leg, Trapezoid The Leg of a Trapezoid is one of the non-parallel sides.
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Leg, Triangle Most generally the legs of a triangle refer to the perpendicular sides of a right triangle only.
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Lemma A little, inconsequential theorem is sometimes called a Lemma.
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Line A collection of points that comprise the shortest path between two points in Euclidean geometry is a Line; all points in a Line are collinear and, of course, coplanar.
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Line Segment A section of a line, with endpoints on both ends, is a Line Segment.
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Linear As the first four letters imply, Linear means "of a line" or "lined up" in a collinear fashion.
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Linear Pair Two adjacent supplementary angles form a Linear Pair.
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Loci The points that comprise a function (or graph thereof) are its Loci.
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Locus A single point on a function or on its graph is a Locus.
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Logic Logic takes many forms and is instrumental in understanding the language of mathematics.
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