Unit 1 Geometry Vocabulary
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15 Terms
Point
A location with no size or shape.
Line
Made up of points with no thickness or width; Extends indefinitely in both directions
Plane
A flat surface made up of points that extends indefinitely in all directions.
Collinear
Points that lie on the same line.
Coplanar
Points that lie on the same plane.
Line Segment
A measurable part of a line consisting of two endpoints.
Ray
A line that extends indefinitely in one direction.
Angle
The intersection of two rays at a common endpoint.
Adjacent Angles
Two angles that share a common vertex and side.
Vertical Angles
Congruent angles that are across from each other on intersecting lines
Complementary
Two angles with measures that have a sum of 90 degrees.
Supplementary
Two angles with measures that have a sum of 180 degrees.
Linear Pair
Adjacent angles that are supplementary.
Perpendicular
Two lines that intersect at a 90-degree angle.
Bisector
A line, ray, or segment that divides an angle or segment into two equal parts.
Note 
Flashcards (46)