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Geometry VocabUnit 1

Honors Geometry

___ is the set of all points space
____ is a location in space that has no size or dimension. It is usually represented by a dot. point
A ___ is a series of points that extend in opposite directions without an end. Lines are one dimension. It is usually represented by a straight line with two arrowheads to indicate that the line extends without end in two directions. line
A ____ is a flat surface with no thickness. plane
______ are points that lie on the same line. collinear
____ are points that lie on the same plane. coplanar
_____ is a part of a line consisting of two endpoints and all the points between. segment
____ is part of a line with one endpoint. ray
_____ is two collinear rays with the same endpoint. opposite rays
____ are coplanar lines that never intersect. parallel
_____ are non-coplanar lines that never intersect. skew
_____ are coplanar lines that intersect to form right angles. perpendicular lines
____ are planes that do not intersect. parallel planes
_____ are two different rays that have the same initial point. angles
____ are angles that have the same measure. congruent angles
______ is a ray that divides an angle into two congruent angles. angle bisector
______ is two angles whose sides form opposite rays. vertical angles
______ is two coplanar angles with a common side and vertex, but no common interior points. adjacent angles
______ is two angles whose sum is 180. supplementary
______ is two angles whose sum is 90. complementary
________ is two adjacent angles whose non-common sides form opposite rays. linear pair
_____ are rules that are accepted without proof. postulate
______ are rules that are proved. theorems
_____ is a line that intersects two coplanar lines at two distinct points transversal
a(n) ______ angle is less than 90. acute
a(n) ______ angle is equal to 90. right
a(n) ______ angle is equal to 180. straight
a(n) ______ angle is greater than 180. obtuse
______ is a point that divides a segment into two congruent segments. midpoint
______is a line, segment, or ray that intersects a segment at its midpoint segment bisector
___is a line, segment, or ray that is perpendicular to a segment at its midpoint. perpendicular bisector
Created by: mustangathlete02