Geometry Terms Flashcards

Front

congruent

Back

same size, same shape, equal

Front

parallel lines

Back

lines that never intersect and are the same distance apart

Front

perpendicular lines

Back

lines that intersect at right angles (90 degrees) to each other

Front

right angle

Back

an angle that measures 90 degrees

Front

vertex (plural - vertices)

Back

the point (corner) of intersection of two edges in a two-dimensional figure

Front

side

Back

each of the line segments of a polygon

Front

acute angle

Back

an angle that measures more than 0 degrees and less than 90 degrees

Front

classify

Back

assign to a set or subset

Front

polygon

Back

a closed figure made up of three or more sides

Front

irregular figure

Back

when a shape has angles that are not equal and sides that are not equal