H

halves

1. Amounts equal to half.

2. Divided into two equal parts.

pages 311–312, 324–325, 329

halving strategy

heptagon

A seven-sided polygon.

page 421

hexagon

A six-sided polygon.

pages 397, 406, 421, 428

horizontal axis

In a coordinate grid, the x-axis. The axis that extends from left to right.

pages 5–6, 10–11, 29, 36–39, 47–49, 57, 164–166, 187, 190, 225, 248, 476, 563

hundredth

1 of 100 equal parts of a whole (.01).

pages 452, 466–473, 481, 485