Vocabulary is promordial in order to improve your TOEFL score.

This vocabulary will be useful for a math course in school, for expanding your English vocabulary, or especially for any number of English language exams you may take. Here we will look at the most commonly used words in the field, along with their French translations.

Remember, Preparation is the key to succeed !

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a number that represents the characteristics of a data set

Smokers, he notes, are on average poorer than nonsmokers.

la moyenne


to divide into two congruent parts

The border between the city and its suburbs bisects the bay.

couper en deux


the set of points in a plane that are a fixed distance from a given point

They make a circle, join hands, and sing happy birthday.

le cercle


the distance around a circle

Assuming the Earth is spherical, its circumference spans 360 degrees.

la circonférence


figures or angles that have the same size and shape

Then, there exist two color classes that form congruent polygons.



a solid figure with six square faces

When cooked, peel potatoes and cut into desired-size cubes.

le cube


information that is gathered

I have never experienced so much weak data on any subject.

les données


the bottom part of a fraction

The teacher says we need to find the least common denominator.

le dénominateur


the line segment joining two parts on a circle and passing through the center of the circle

Then start with smaller trees, about six inches in diameter.

le diamètre


the result of subtracting two numbers

The difference of 7 and 4 is 3.

la différence


a mathematical statement that says that two expressions have the same value

He also loves mathematics, and spends his free time solving equations.


even number

a number that is divisible by 2

Sizes were listed as ranging in even numbers from 32 through 54.

le nombre pair


a number that indicates the operation of repeated multiplication

This formula is transparent when the exponents are converted to multiplication.



a number used to name a part of a group or a whole

We are talking tiny fractions of 1 percent of national income.

la fraction


a type of drawing used to represent data

Easily adjusted, the forecast graph lets you explore financial possibilities.

le graphique


in a data set, the average

The mean of 8, 10, and 12 would be 10.

la moyenne


the middle number in a data set when the data are put in order

By 1990 the median had dropped to $172,500.

la médiane


the number that occurs most frequently in a set of data

The mode in the set {5, 6, 6, 7} is 6.

le mode


the top part of a fraction

This value is the biggest possible numerator for the relative error.

le numérateur

odd number

a number that is not divisible by 2

An even number of particles is more stable than an odd number.

le nombre impair


two lines that are in the same plane and never intersect

Place two parallel to each other, with space between them.



a fraction, or ratio, in which the denominator is assumed to be 100

For the quarter, they were down 2.5 percent.

pour cent


two lines are perpendicular if the angle between them is 90 degrees

Set perpendicular to the river, the library looks comparatively slick.



the ratio of the circumference of a circle to its diameter; 3.14

For fun, he memorized the first 37 digits of pi.

le pi


a closed plane figure made up of several line segments that are joined together

These include vertices, edges, faces, polygons, and surfaces.

le polygone


the distance from the center to a point on a circle

Widening my radius to 50 miles did not improve the results.

le rayon


a quadrilateral with four 90-degree angles

Some are fish-shaped, others are more versatile rectangles.

le rectangle

right angle

an angle whose measure is 90 degrees

This right angle bends the steps into a shape resembling a staircase.

l’angle droit


a quadrilateral with four equal sides and four 90 degree angles

Plants three pots deep line the perimeter of this little square.

le carré


a three-sided polygon

According to height, I was the apex of the triangle.

le triangle


a measurement of space, or capacity

Simmer until reduced in volume by half, about 10 minutes.

le volume

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