Math word of the day

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January 3

Word: Chord

Definition: A line segment whose ends are on a

circle▪ http://www.mathopenref.com/chord.html

January 4

Word: circumference

Definition: The distance around a circle▪ http://www.mathopenref.com/circumference.h

tml

January 5

Word: Composite number

Definition: A whole number having more than 2

factors▪ 12 Factor pairs (1,12) (2,6) (3,4)

January 6

Word: diameter

Definition: A line segment that has endpoints on a

circle and passes through the center of a circle.

January 7

Word: Expanded notation

Definition: A way to write numbers that shows the

value of each digit▪ 2,347 = 2,000+ 300 + 40 +7

January 10

Word: Greatest common factor (GCF)

Definition: The largest factor that 2 or more

numbers have in common.▪ http://www.math.com/school/subject1/lessons

/S1U3L2GL.html

January 11

Word: heptagon

Definition: A polygon with 7 sides.

January 12

Word: histogram

Definition: A bar graph in which the labels for the

bars are numerical intervals.

January 13

Word: hypotenuse

Definition: The longest side of a right triangle

January 14

Word: Least common Denominator (LCM)

Definition: The least common multiple of the

denominators in 2 or more fractions.▪ http://www.math.com/school/subject1/lessons

/S1U3L3GL.html

January 18

Word: Leg (of a right triangle)

Definition: Either of 2 sides that form the right

angle in a right triangle

January 19

Word: Line plot

Definition: A graph showing the frequency of data

on a number line.▪ http://www.icoachmath.com/SiteMap/Line_Plot

.html

January 20

Word: nonagon

Definition: A polygon with 9 sides

January 21

Word: plane

Definition: A flat surface that extends infinitely in all

directions.

January 24

Word: Prime number

Definition: A whole number that has exactly 2

factors: 1 and itself▪ 3 (1, 3), 5 (1,5), 7 (1,7) , 11 (1,11)

January 25

Word: quadrants

Definition: The four regions of a coordinate plane

that are separated by the axes.

January 26

Word: radius

Definition: A line segment that has 1 endpoint on a

circle and the other endpoint at the center of the circle.▪ http://www.mathopenref.com/radius.html

January 27

Word: range

Definition: The difference between the greatest

(maximum) and least (minimum) numbers in a set.▪ 3, 5, 9, 10▪ Maximum – 10▪ Minimum – 3▪ Range = 10-3= 7

January 28

Word: rate

Definition: A ratio that compares 2 quantities

having different units. ▪ 65 miles per hour

January 31

Word: ratio

Definition: A comparison of 2 numbers using

division▪ http://www.mathleague.com/help/ratio/ratio.h

tm