OCR GCSE Mathematics key terms

A flat arrangement of a solid’s faces that can be folded to make the solid.

The quantity after the percentage increase or decrease has been applied.

A situation in which the plotted points show no apparent relationship between the variables.

A calculation completed using written or mental methods rather than a calculator.

A quadratic expression whose coefficient of $x^2$ is not $1$.

Rewriting an answer so that its coefficient has magnitude at least 1 but less than 10, while adjusting the power of ten to keep its value unchanged.

A rule that gives a term directly from its position number $n$.

A rule that gives a term directly from its position $n$ in a sequence.

The expression above the fraction line.

The starting shape before a transformation.

An angle greater than 90° but less than 180°.

A whole number that is not divisible by 2; division by 2 leaves a remainder of 1 in the corresponding positive number.

One equal unit represented by 1 in a ratio; its value depends on the quantities being compared.

A symbol such as $+$, $-$, $\times$ or $\div$ that tells you which mathematical operation to perform.

Sides or angles that lie across from one another rather than sharing a vertex.

The angle across a triangle from a particular side, with neither of its arms forming that side.

The side of a right-angled triangle directly across from the chosen acute angle.

The agreed sequence in which the operations in a calculation are performed.

The number of positions in one complete turn in which a shape looks exactly the same, including its starting position.

The usual decimal representation of a number rather than its representation in standard form.

The clockwise or anticlockwise order of the vertices around a shape; a reflection reverses this order.

The point $(0,0)$ where the horizontal and vertical axes meet.

The quantity before any increase or decrease takes place.

A flat view formed by looking straight towards a solid, without making more distant parts appear smaller.

A result of a trial, such as the spinner landing on blue.

A side or curve that lies on the exposed outside boundary of a shape.

A value or plotted point that does not fit the general pattern of the data.

The value produced when a function acts on an input.