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parabola
parabole f

A parabola. It is the locus of a point that moves so that it remains equidistant from a fixed point (called the focus) and a fixed line (called the directrix). It is a curve from the conic section.

A parabola has a focus at the point 4ax = y2
(a,0)
and a directrix is ​​the line x=-a.

Any equation of the form y=ax2+bx+c or y2=4ax gives the shape of a parabola. The path of a projectile is almost in the shape of a parabola.

parallel
parallel

Parallel. Parallel. Lines on a plane that never meet no matter how far they extend. The distance between two parallel lines is always equal.

A railway line is two parallel lines.

parallelepiped
parallelélopipède m

Parallelogram. A polyhedron whose faces are all parallelograms.

parallelogram
parallelélogramme m

Parallelogram. Quadrilateral
Opposite sides are equal (and parallel).

AB = DC and AB || DC
AD = BC and AD || BC

All parallelograms have the following properties:

a) The diagonals bisect each other, as they bisect the entire figure.

b) The opposite angles are equal.

c) Rotational symmetry of order 2.

parameter
parameter m

Meter. The values ​​m and c in the equation y=mx+c are called parameters and determine the characteristics of the straight line represented by the equation. (m represents the gradient and c represents the intercept on the y-axis).
In the parabola equation y2=4x parabola 12=x and 2t=y and each value of the parameter t gives a point on the curve.

Pascal's triangle
triangle m de Pascal

Pascal's triangle. Pascal's triangle is a pattern of numbers:
Each number is equal to the sum of the two numbers above it. The numbers in each row of the triangle form binomial coefficients that occur in the expansion of x+y)2 ) for different values ​​of n.

penny
pence f

Pence. A unit of currency. Every hundred pennies is equal to a pound or
pound.

pentagon
pentagône m

pentagon. A polygon with five sides. The sides of a regular pentagon are equal and each of its interior angles is 108°.

percentage
pourcentage m

Percentage. A method of relating a fraction of a given quantity to the whole quantity in parts of a hundred. For example:

30% of something equals thirty parts out of a hundred. Hence, 30%/100 = 30 (note that % means
percent).

Percentage changes in a quantity are calculated as follows:

If the original value is A, and the new value is B.

The percent change is 100 × A-B /A