Geometry

Front

a triangle that has one angle that measures 90º.

Back

right

Front

a triangle that has exactly three angles that measure between 0º and 90º

Back

acute

Front

The triangle has exactly one angle that measures greater than 90º and less than 180º.

Back

obtuse

Front

All sides of the triangle are the same length

Back

equilateral

Front

At least two sides of the triangle are the same length.

Back

isoceles

Front

No sides of the triangle are the same length.

Back

scalene

Front

two sides are said to be _______ if they have the same length

Back

congruent

Front

two or more lines that are always the same distance apart and never intersect

Back

parallel

Front

a straight line that makes the right angle (90 degrees) with the other line

Back

perpendicular

Front

a closed plane figure formed from line segments that meet only at their endpoints.

Back

polygon