Grade 3 with Mrs. Nelson

Unit Three: Linear Measures and Area

inch- unit of measure representing 1/12 of a foot

line segment- a strait path between two endpoints

centimeter- a unit of measure representing 1/100 of a

meter

millimeter –a unit of measure representing 1/1000 of a

meter

perimeter –the distance around a shape

polygon –a closed figure on a flat surface that is made up of

line segments joined end-to-end; the line segments of a

polygon may not cross

area –the amount of surface inside a shape measured in square

units

square foot –a unit of surface area measuring 1 ft X 1 ft

circumference –the distance around a circle (its perimeter)

diameter –a line segment that goes through the center of a circle

and has endpoints on the circle