أكاديميا - كولنز - معاجم الجيب العلمية - الرياضيات - انكليزي -فرنسي -عربي الحرف ٤_ d

Academia - Collins - Pocket Scientific Dictionaries - Mathematics - English - French - Arabic Letter 4_ D

dividend
dividende m

Divisor. A number that is divided by another number. For example: in 2468+3, 2468 is the dividend.

division
division f

Division. The inverse of multiplication, which is one of the basic arithmetic operations. The quotient of two numbers is determined by this operation, which accompanies the process of dividing a quantity into a number of equal parts.

divisor
diviseur m

Divisor. The quantity by which the dividend is divided.
The factors of a whole number are sometimes called its divisors. For example: in 3+2468, 3 is the divisor (divisor).

dodecagon
dodécagone m

Dodecagon. A polygon with 12 sides, and therefore 12 interior angles.

dodecahedron
dodecahedron m

Dodecahedron. A polyhedron with 12 faces (surfaces).

Regular dodecahedron

A regular dodecahedron has 12 regular pentagonal faces.

domain
domaine m

Space. The set that serves as input to a function is called the function's space. For example: for the function x =x, the space is usually taken to be the set of possible values ​​of the variable x, i.e. non-negative real numbers.

dual
dual m

Dual. In plane and spatial geometry, figures that can be obtained from each other by exchanging certain elements (such as points > lines) are called dual figures. Theorems for one figure provide similar theorems for the dual.

duodecimal
duodécimal

Double. The number system that uses base 12.

Two additional numerals are required in addition to the usual digits 2.1.0 . . . . to represent the numbers 10 and 11 in this system.

If the letters T and E are used as symbols for 10 and 11 respectively, then:

Base 10
22
35
41
Ones Tens

Base 12
1T
2E
35
Ones Twelve Tens