Figures, Lines and Angles

Front

congruent

Back

when two figures are the same size and shape

Front

square

Back

a shape with 4 congruent sides, 4 right angles, and it's a quadrilateral

Front

rectangle

Back

a shape with opposite congruent sides, 2 sets of parallel lines, 2 sets of perpendicular lines, and it's a quadrilateral

Front

right triangle

Back

a triangle with 1 right angle and 2 acute angles

Front

acute triangle

Back

a triangle with 3 acute angles

Front

obtuse triangle

Back

a triangle with 1 obtuse angle and 2 acute angles

Front

isosceles triangle

Back

a triangle with 2 congruent sides

Front

scalene triangle

Back

a triangle with NO congruent sides

Front

equilateral triangle

Back

a triangle with ALL sides that are equal/congruent

Front

Back

a quadrilateral with 2 sets of parallel lines