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2013 Midterm Vocabulary
1
The distance from the center of
a circle to any point on the
circle.
Lines that are not coplanar
A point at an end of a segment
or the starting point of a ray
An angle that measure 180°
The distance around a circle
Intersecting to form 90° angles
The side opposite the right angle
in a right triangle
The statement formed by both
exchanging and negating the
hypothesis and conclusion of a
conditional statement
An undefined term in
geometry, a line is a straight
path that has no thickness and
extends forever
The point that divides a segment
into two congruent segments
The nonadjacent angles formed
by two intersecting lines
The number of non-overlapping
units squares of a given size that
will exactly cover the interior of
a plane figure
2
A triangle with at least two
congruent sides
A statement that can be written
in the form “p if and only if q”
A triangle with three acute
angles, each less than 90°
An undefined term in Geometry,
it is a flat surface that has no
thickness and extends forever
Angles that together sum to
equal 90°
A figure formed by two rays
with a common endpoint
A statement that can be written
in the form “if p, then q”, where
p is the hypothesis and q is the
conclusion
Two angles in the same place
with a common vertex and a
common side, but no common
interior points
Lines in the same plane that do
not intersect
The distance between the two
endpoints of a segment
A line that has two endpoints
and does not extend forever
A triangle with three congruent
sides
3
An angle that equals 90°
The set of all points in three
dimensional space
The distance around a polygon
Angles that together sum to
equal 180°
The statement formed by
exchanging the hypothesis and
conclusion of a conditional
statement
The statement formed by
negating the hypothesis and
conclusion of a conditional
statement
A part of a line that starts at
an endpoint and extends forever
in one direction
An angle that measures greater
than 90° but less than 180°
An undefined term in Geometry,
it names a location and has no
size
The side opposite the vertex
angle
A triangle with no congruent
sides
Two segments that have the
same length
Two angles that have the same
measure
4
A segment that has endpoints on
the circle and that passes
through the center of the circle
A pair of adjacent angles whose
non-common sides are opposite
rays
One of the two sides of the
right triangle that form the
right angle