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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
