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Lines, and Angles

TermDefinition
angle - the space between two intersecting lines
parallel lines - lines that NEVER cross
intersecting lines - lines that cross at any angle
perpendicular lines - lines that cross at a 90 degree angle
acute angle - measures LESS than 90 degrees
obtuse angle - measures MORE than 90 degrees
right angle - measures EXACTLY 90 degrees
straight angle - a straight angle looks like a straight line and measures 180 degrees
right triangles - a triangle that has one 90 degree right angle
acute triangles - a triangle that has ALL acute angles
obtuse triangles - a triangle that has 1 obtuse angle
line segment - a part of a line that has 2 endpoints
ray - a part of a line that starts at 1 endpoint and continues in one direction without ending
vertex/point - where the sides of a 2D figure meet
line - a straight path that continues in opposite directions without ending
Created by: user-1970543
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