Unit 3.9 Area Measurement

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inch (in)

A customary unit of length. 12 inches = 1 foot.

row

A horizontal series of cells in a table.

expression

A mathematical phrase that contains operations, numbers, and/or variables.

dimension

A measure in one direction.

centimeter (cm)

A metric unit of length equal to 0.01 of a meter.

grid

A network of lines that cross each other to form a series of squares or rectangles.

rectilinear figure

A polygon where all angles are right angles.

column

A vertical series of cells in a table.

array

An arrangement of objects in equal rows.

square centimeter

The area of a square with 1-centimeter sides

perimeter

The distance around a figure

area

The number of square units required to cover a surface.

width of a rectangle

The shorter dimension of the rectangle

equation

a mathematical statement that two expressions are equal; must have an equal sign

rectangle

a quadrilateral with four right angles

square inch

a unit of area equal to one inch by one inch square

overlap

extend over and cover a part of

unknown

not known

length of a rectangle

the longer dimension of a rectangle


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