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Angles Lines 4th

TermDefinition
acute angle an angle less than 90 degrees
right angle an angle that is exactly 90 degrees
obtuse angle an angle larger than 90 degrees
point an exact location
ray a line with a start point but no end point
line segment part of a line with two endpoints
line a one dimensional figure that continues straight in both directions with no end
parallel lines two lines that never touch
perpendicular lines lines that intersect and form 90 degree angles at the intersection
angle the space between two rays that is formed from intersection lines, line segments, or planes
degree unit of measurement used to describe the size of an angle
protractor an instrument used to draw or measure angles
adjacent next to something else
complementary angles two angles that can be combined to equal 90 degrees
supplementary angles two angles that can be combined to equal 180 degrees
Created by: MsBall
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