Eduqas GCSE Mathematics key terms

A shape formed by combining simpler shapes, such as rectangles, triangles or parts of circles.

A three-dimensional object formed by combining standard solids or removing parts from them.

Interest calculated on the current balance, including interest added in earlier periods.

A measurement formed by combining other measurements, such as mass divided by volume or force divided by area.

A unit formed by combining other units, such as kilometres per hour or grams per cubic centimetre.

A measure of how much of a particular substance is present in a given amount of mixture or solution.

The probability of an event when another event is known to have occurred. $P(A\mid B)$ means the probability of $A$ given $B$.

Two shapes are congruent when they have exactly the same shape and size. Their corresponding sides and angles are equal.

Having exactly the same shape and size, with equal corresponding lengths and angles.

A shape with exactly the same shape and size as another: corresponding side lengths and corresponding angles are equal.

Shapes with exactly the same shape and size. Their corresponding sides and angles are equal.

A mathematical statement suggested by observations or examples, but not yet established by a proof.

For a two-term expression involving a surd, the expression with the sign between the terms reversed. For example, the conjugate of $1+\sqrt{3}$ is $1-\sqrt{3}$.

An integer immediately before or after another integer. Consecutive integers can be represented by $n$ and $n+1$.

Whole numbers that follow one another with a difference of 1, represented by $n$, $n+1$, $n+2$ and so on.

A fixed value. A constant term is a term containing no variable, such as $7$ in $3x+7$.

The fixed multiplier $k$ in a proportional relationship, such as $y=kx$ or $y=\frac{k}{x}$.

An accurate geometrical drawing made using a straight edge and compasses.

Numerical data that can take any value within a range, such as height or time.

The approach of successive numerical estimates towards a particular value.

The multiplier used to express a measurement in another unit without changing the quantity being measured.

An ordered pair $(x,y)$ that locates a point: $x$ gives its horizontal position and $y$ its vertical position relative to the origin.

An ordered pair of numbers, written $(x,y)$, giving a point's horizontal and vertical positions.

A tendency for two variables to vary together, shown by a pattern in paired data.

Angles in matching positions at the two intersections made by a transversal. They are equal when the crossed lines are parallel.

Lengths that occupy matching positions in two shapes or representations of the same object.

A side, angle or vertex that matches the same part of another shape.