October Pre-Algebra Vocab Words

Front

Continuous line forming the boundary of a closed 2D figure.

Back

Perimeter

Front

Unit squares covering a 2D closed figure?

Back

Area

Front

Space in a 3D figure (capacity).

Back

Volume

Front

Sum of all areas of a 3D figure?

Back

Surface Area

Front

A quadrilateral with one pair of parallel sides.

Back

Trapezoid

Front

A polygon with unequal sides and angles.

Back

Irregular Polygon

Front

2D pattern of 3D figures that can be folded. What is it?

Back

Net

Front

Any number that can be expressed as a fraction.

Back

Rational Numbers

Front

A decimal with a repeating pattern of digits after the decimal point that continues forever.

Back

Repeating Decimals

Front

A bar or line over repeating digit(s). What is this called?

Back

Bar Notation