Geometry flashcards

Front

Lines of symmetry

Back

Lines drawn to show congruent halves of a figure

Front

two dimensional figures

Back

flat shapes with only two dimensions, such as length and width

Front

figure

Back

an illustration, diagram, or representation

Front

congruent

Back

exactly the same figure and size

Front

right angle

Back

an angle that measures 90 degrees

Front

right triangle

Back

A triangle with one 90 degree angle

Front

obtuse angle

Back

an angle larger than 90 degrees

Front

obtuse triangle

Back

a triangle with two acute angles (less than 90 degrees) and one obtuse angle (more than 90 degrees)

Front

acute angle

Back

angle less than 90 degrees

Front

acute triangle

Back

A triangle with all acute angles (all angles are less than 90 degrees)