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Academia - Collins - Scientific Pocket Dictionaries - Mathematics - English - French - Arabic Letter 9_ C

cyclic
cyclique

cyclic. The cyclic permutation of an organized set is achieved by applying each body to the next, and finally applying the last to the first. For example:

(1,2,3) → (2,3,1) → (3,1,2)

The first permutation is indicated as follows:

(123/ 231)

The cyclic quadrilateral is a flat four-sided shape whose vertices lie on the perimeter of a circle.

The opposite angles of the cyclic quadrilateral are supplementary angles.

cycloid
cycloïde m

Rolling. Rolling is the curve drawn by a point on the circumference of a circle rolling along a straight line.

The parametric equation (see parameter) for the roll formed by a circle of radius: x=a(0-sine) y=a(1-cose)

cylinder
cylindre m

Cylinder. A cylinder is a solid with one axis of symmetry around which there is a regular circular cross-section.

The volume of the cylinder is: V=2πrh (the area of ​​the circular end multiplied by the height).

The area of ​​the curved surface of the cylinder is: A=2πrh (the circumference of the circular end multiplied by the height).