OCR GCSE Mathematics key terms

Triangles that have exactly the same shape and size, so every pair of corresponding sides and angles is equal.

One of a pair of expressions that differ only in the sign between two terms, such as $3+\sqrt2$ and $3-\sqrt2$.

A number with a fixed value that does not change.

Acceleration that does not change during the motion being modelled.

The fixed number $k$ in an equation such as $y=kx$, equal to $y\div x$ for every matching pair of values.

A term containing no variable, such as $8$ or $-3$.

A drawing made accurately using specified geometrical instruments, with the working arcs left visible.

A quantity that can take any value within a range, such as length, time or mass.

The number by which a value is multiplied or divided when it is rewritten in another unit.

A graph used to read equivalent values in two currencies, units or temperature scales.

A pair $(x,y)$ that gives a point's horizontal and vertical positions respectively.

A pair of perpendicular numbered lines used to locate points: the horizontal $x$-axis and the vertical $y$-axis.

A pair $(x,y)$ that gives a point's horizontal and vertical positions, in that order.

An ordered pair $(x,y)$ that gives the position of a point: $x$ is the horizontal position and $y$ is the vertical position.

An association between two variables, shown by an overall pattern in paired data.

Vertices, angles or sides that occupy matching positions in two shapes.

Angles at different intersections that occupy the same relative position where a transversal crosses parallel lines; they are equal.

A pair of sides, edges or other lengths that occupy matching positions in two similar figures.

Sides or angles that occupy matching positions in two shapes.

A vertex or other point on the image that matches a particular point on the original shape.

A pair of matching points on the original shape and its image, such as a vertex and the vertex to which it maps.

A pair of values for the two variables that belong to the same situation, used together when finding the constant of proportionality.

Vertices that occupy matching positions on an original shape and its image.

A formula relating the three side lengths of any triangle to the cosine of one of its angles: $a^2=b^2+c^2-2bc\cos A$.

A slice through a solid; its shape depends on the direction of the cut.

A solid with six equal square faces.

A number of the form $n^3$, where $n$ is a positive integer.

A root whose degree is 3. For example, $\sqrt[3]{-8}=-2$ because $(-2)^3=-8$.