D
Data
A set of numerical facts
Data
base A collection of data that is organized and stored electronically for
rapid search, retrieval and editing.
Decagon
A polygon having ten sides.
Decimal
notation Our notation for writing numerals using the Hindu-Arabic numerals
and place values based on the powers of ten
Decimal
numeral A numeral which contains a decimal point and is used for a fraction
Decimal
point The dot in a decimal numeral which shows where the one's place is in
the numeral
Degree
of a polynomial The
exponent of the highest power term in a polynomial.
Degree
The most common unit of measurement for angles.
Denominator The bottom portion of a fraction
Density
The mass per unit volume of a substance.
Dependent
events Two events in
which the result of the first affects the result of the second.
Diagonal
0 A segment that joins two consecutive vertices of a polygon.
Diagonal
(of polygon) A line segment that joins two non-consecutive vertexes of a
polygon
Diameter
, 0 A chord that contains the center of a circle or a sphere.
Also, the length of such a chord.
Diameter
A line segment which contains the center of a circle and Whose endpoints are
two points of the circle
Digit
Each basic (single) numeral which names a number
Direct
measurement A measurement made by comparing an object directly with a
standard unit of measure
Discount
The amount deducted from the original amount.
Distributive
property of multiplication over addition
For each number a, each number b, and each number
c,
a x (b + c) (a x b) + (a x c)
Distributive
property The sum of two addends multiplied by a number is the sum of the
product of each addend
and
the number. For any numbers a. b and
c, a x
(b+c) = a x
b+ a x c.
Dividend
A number divided by another number (divisor) resulting in a qoutient.
Divisible
A number is divisible by another if the quotient is a whole number and the
remainder is zero.
Division
property of equality If each
side of an equaltion is divided by the same nonzero number, then the two
sides
remain equal. If a = b, then a/c
= b/c, c¹
0.
Division
Separating into parts or portions.
Divisor
(in division) The number by which the dividend is to be divided
Divisor
(of number) A non-zero factor of a number
Divisor
One of two or more integers that can be exactly divided into another integer . e
number that is divided
into
another number (dividend) resulting in a quotient.
Dodecagon
A polygon having twelve sides.