# Shared Flashcard Set

## Details

Geometry Vocabulary
Burtt's Geometry
23
Mathematics
04/04/2011

Term
 line
Definition
 a straight path that goes on forever in both directions
Term
 line segment
Definition
 part of a line that has two endpoints
Term
 ray
Definition
 part of a line having only one endpoint
Term
 angle
Definition
 two rays having the same endpoint
Term
 point
Definition
 an exact position or location
Term
 endpoint
Definition
 a point at the end of a ray
Term
 vertex
Definition
 the point that two rays of an angle have in common, the corner where 3 or more edges of a solid figure meet
Term
 parallel lines
Definition
 lines that never cross even if they are extended
Term
 intersecting lines
Definition
 lines that cross each other at a point
Term
 perpendicular lines
Definition
 lines that form square corners where they cross
Term
 right angle
Definition
 an angle that forms a square corner
Term
 acute angle
Definition
 an angle that is smaller than a right angle
Term
 obtuse angle
Definition
 an angle that is larger than a right angle
Term
 closed figure
Definition
 a figure that begins and ends at the same point
Term
 open figure
Definition
 a figure that has ends that do not meet
Term
 polygon
Definition
 a closed figure with straight sides that are line segments
Term
 triangle
Definition
 a polygon with three sides and three angles
Term
Definition
 a polygon with four sides and four angles
Term
 pentagon
Definition
 a polygon with five sides and five angles
Term
 hexagon
Definition
 a polygon with six sides and six angles
Term
 octagon
Definition
 a polygon with eight sides and eight angles
Term
 face
Definition
 a flat surface of a solid figure
Term
 edge
Definition
 the line segment formed where two faces of a solid figure meet
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