Geometry Glossary

scalene triangle:	A triangle with no congruent sides.
secant:	A line that intersects the circle in two points.
sector of a circle:	The region bounded by an arc of a circle and two radii whose endpoints are endpoints of that arc.
segment:	Segment XB is the set of points consisting of points A, B, and all points between A and B.
similar polygons:	Polygons in which corresponding angles are congruent and the ratios of the lengths of corresponding sides are equal.
similar triangles:	Triangles in which corresponding angles are congruent and corresponding sides are proportional.
skew lines:	Noncoplanar lines.
slope:	The slope of a segment PIP2, with endpoints P1 (x1,y1) and P2(X2,Y2), is the ratio (y2 - y1)/(x2 - x1).
space:	The set of all points.
sphere:	The set of all points in space at a given distance from a given point called the center.
square:	A rectangle with four congruent sides.
standard form:	The standard form of an equation of a line is an equation of the form ax + by = c, where a and b are not both zero, and where a > 0.
straight angle:	An angle with a measure of 180.
supplementary angles:	Angles whose sum of their measures is 180. Each angle is called a supplement of the other.
symmetric figures:	Figures that are their own mirror images about a line or about a plane.

Note: The terms in this collection may not be entirely accurate.
They are for reference only.

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