An ABC Book of Math An ABC Book of Math TermsTerms

An ABC Book of Math An ABC Book of Math TermsTerms

By: Kelly McDerby

Published by: Rocky Press

September 11,2005

A• Acute angle- is an

angle less than 90°.

30°

B• Bar graph- a graph

using bars to show the data.

0

10

20

30

40

50

60

70

80

90

1stQtr

2ndQtr

3rdQtr

4thQtr

East

West

North

C• Complementary

angle- two angles equal 90°.

45°

45°

D• Diameter- the

distance between a circle.

E• Equilateral triangle-

all of the sides are equal on the triangle.

F• Frequency table-

shows number of data on the table

EVENTEVENT TALLYTALLY FREQ.FREQ.

Baseball llll llll 10

Hockey lll 3

Soccer llll ll 7

Football llll llll l 11

Volleyball llll 4

Most Popular Sports

G

• Graph- is the process of placing points on a line.

H

• Histogram- is like a bar graph but the bars are touching.

I

• Integer- the whole number and its opposite.

-1,0,1

J• Joule- if the

International System of Units (SI units) are used instead of U.S. customary units of work (ft lbs), work is expressed in N m. Each unit of work in N m is called a Joule. (J)

1J= .74 ft lbs

K • Kilogram- the base

unit of mass in the metric system equivalent 1,000 grams.

L

• Line graph- a graph using to show values change over time.

M

• Mode- the number 1,8,4,4,5,6,5,9,5

that appears more

than the other mode- 5

numbers.

N

• Negative integer- a number lower than zero.

-4,-3,-2,-1

O

• Obtuse angle- an angle larger than 90 degrees but less than 180 degrees. 120°

P

• Pentagon- a polygon with five sides.

Q

• Quadrilateral- a closed figure four sides and four angles.

R

• Right angle- an angle that is 90 degrees.

90°

S

• Straight angle- an angle that is 180 degrees. 180°

T

• Triangle- a polygon that has three sides and three angles

UU

• Upper extreme- the greatest number of a set of data.

1,3,8,6,10,4,4,1,3

Upper extreme=10

V

• Variable- place holder to represent an unspecified value

3 + 6a = 21

a = 3

W• Whole numbers-

numbers after zero 1,2,3,4,5,6,7,8,9,10

XX

• X-axis- the horizontal number line in a coordinate plane.

3

2

1

-3 -2 -1 1 2 3

-1

-2

-3

X-axis

Y• y-axis- the vertical

number line in a coordinate plane.

3

2

1

-3 -2 -1

1

1 2 3

2

3

Y-axis

Z• Zero- the number

between the positive and negative numbers.

-2, -1, 00, 1, 2