Unit 3.9 Area Measurement
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
