L

length

The distance from end to end of an object.

pages 19, 25–31, 34–38, 45–49, 54–60, 164–165, 177–179, 448–453, 454–456, 462, 467

less than

Not as many or as much as; e.g., 5 is less than (<) 8.

pages 99–100, 133–134, 235, 316–317, 323–324, 343, 345–346, 358–363, 386–387

line

A set of points that form a straight path extending infinitely in two directions.

pages 373–377

line of symmetry

A line is a line of symmetry for a shape if the two parts match exactly when the shape is folded along this line.

pages 408–410, 437–441

line plot

A way of representing data on a number line that shows frequency of an event using a symbol, such as an X.

pages 17–18, 182

line segment

A part of a line between and including two points called the endpoints.

pages 320–321, 373–377

line symmetry

A figure has line symmetry if it has at least one line of symmetry

pages 407–410, 420

liter

Metric unit used to measure volume. A liter is a little more than a quart. There are about 4 liters in a gallon.

pages 566–568