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Appendix A. Glossary
-
\(A, B, C, \ldots\)
-
capital letters are points
-
\(\overleftrightarrow{AB}\)
-
line containing points
\(A\) and
\(B\)
-
\(\overline{AB} \)
-
line segment from
\(A\) to
\(B\)
-
\(|AB| \)
-
length of line segment from
\(A\) to
\(B\)
-
\(\|\vec{A}\| \)
-
-
\(\|A-B\| \)
-
distance from point
\(A\) to point
\(B\)
-
\(\angle ABC \)
-
angle with rays meeting at
\(B\)
-
\(m\angle ABC \)
-
-
\(\Delta ABC \)
-
triangle with vertices
\(A, B,\) and
\(C\)
-
\(A \cong B \)
-
objects
\(A\)and
\(B\) are congruent (may be line segments, angles, triangles).
-
\(\overleftrightarrow{AB} \: \parallel \: \overleftrightarrow{CD} \)
-
-
\(\overleftrightarrow{AB} \: \perp \: \overleftrightarrow{CD} \)
-
- acute
-
an angle with measure less than a right angle
- circle
-
set of points equidistant from a given point
- complementary
-
the angle sum is that of a right angle
- line
-
undefined term (see chair)
- obtuse
-
an angle with measure greater than a right angle
- parallel
-
two lines which do not intersect
- perpendicular
-
two line segments intersect in a right angle
- plane
-
undefined term (see table)
- point
-
- right angle
-
an angle with measure
\(\pi/2\)
- supplementary
-
the angle sum is that of two right angles
- transversal
-
a line crossing two other (typically parallel) lines
- triangle
-
the shape consisting of line segments connecting three, non-colinear points
