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Angle Vocabulary

All about Angles!

ray has one endpoint
angle has 2 rays that share the same endpoint
vertex the shared endpoint of the rays
point an exact location in space
degree the unit of measure for angles
one-degree angle an angle that turns through 1/360
right angle an angle that turns through 90/360 or 1/4 of a circle
straight angle an angel that turns through 180/360 or 1/2 of a circle. it measure 180 degrees
acute angle measure between 0 and 90
prependicular like the sides of a square or rectangle
obtuse angle measures between 90 and 180
protractor tool used to measure angle
line endless collection of points along a straight line
line segement part of a line that has two endpoints
parallel lines lines that never meet or cross
perpendicular lines lines that meet, or cross to form a right angle
Created by: mourlota