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flash cards

angle made by 2 rays that have the same endpoint
right angle 90 degrees and makes a square corner
acute angle less than 90 degrees
obtuse angle greater than 90 degrees
perpendicular lines, line segments, or rays that form right angles
polygon a closed figure made up of straight line segments
equilateral triangle all sides are the same length
isosceles triangle at least 2 sides are the same lenght
scalene triangle no sides are the same lenght
right triangle one angle is a right angle
acute triangle all three angles are acute angles
obtuse triangle one angle is an obtuse angle
Created by: ambridge3