Customary System: Used mainly in the United States Metric System: Used in the rest of the world and in most scientific research and development.

Linear Units: Inches: Short lines Feet: Medium Lines Yards: Long lines Miles: Long Distances

Linear Units: Measure how long a line is including: length, width,distance, perimeter, area A ruler is a tool used for linear measurement

Linear Units: 12 inches = 1 foot 3 feet = 1 yd 36in = 1 yd 5280ft = 1 mile

Linear Units: Cm- measure short lines M = measure medium lines km- measure long lines

Linear Units: 100cm = 1 m 1000 m = 1 km

What unit measures short lines in the customary system? inches

What unit measures short lines in the metric system? centimeters

What unit measures medium in the customary system? feet

What unit measures long lines in the metric system? meters

What unit measures long lines in the customary system? yards

What unit measures long distances in the customary system? miles

What unit measures long distances in the metric system? kilometers