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Lines and Angles

Geometry

TermDefinition
right angle 90 degree angle
obtuse angle an angle larger than 90 degrees and less than 180 degrees
acute angle an angle less than 90 degrees
point an exact location in space
line a straight path that goes on and on forever
line segment part of a line that has two endpoints
straight angle 180 degree angle
vertex a point where two lines, rays or line segments meet
ray part of a line with one endpoint
protractor a tool to measure angles
parallel lines lines that will never intersect
perpendicular lines lines that intersect at a right angle
intersecting lines lines that cross at one point
line of symmetry a line that divides a figure in halves that are mirror images
Created by: Huff0913
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