# 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.
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.
Leg, Trapezoid The Leg of a Trapezoid is one of the non-parallel sides.
Leg, Triangle Most generally the legs of a triangle refer to the perpendicular sides of a right triangle only.
Lemma A little, inconsequential theorem is sometimes called a Lemma.
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.
Line Segment A section of a line, with endpoints on both ends, is a Line Segment.
Linear As the first four letters imply, Linear means "of a line" or "lined up" in a collinear fashion.
Linear Pair Two adjacent supplementary angles form a Linear Pair.
Loci The points that comprise a function (or graph thereof) are its Loci.
Locus A single point on a function or on its graph is a Locus.
Logic Logic takes many forms and is instrumental in understanding the language of mathematics.

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