3rd Grade Math Vocab (Set 2)

Front

Increase

Back

"go up" or to add more of

Front

Decrease

Back

"go down" or take away from

Front

Right Angle

Back

exactly 90 degrees

Front

Acute Angle

Back

Less than 90 degrees

Front

Obtuse Angle

Back

more than 90 degrees

Front

Vertex (Vertices)

Back

point where edges meet

Front

Edge

Back

straight line connecting faces of a three-dimensional (3D) figure

Front

Face

Back

flat side of a three-dimensional (3D) figure

Front

Prism

Back

A three-dimensional (3D) figure with equal opposite faces (examples include a triangular and rectangular)

Front

Cone

Back

3D figure with one vertex and one circular face