OCR GCSE Mathematics key terms

A quadrilateral with both pairs of opposite sides parallel.

Lines that remain the same distance apart and never meet, usually indicated by matching arrow marks.

The quantity being compared with the whole.

A route through a tree diagram from start to finish, representing one complete sequence of outcomes.

A rate for each year; the phrase means “per year”.

A way of expressing a number as parts out of 100; the symbol is $\%$.

A decimal used to perform a percentage change in one step; the original amount is multiplied by it.

A whole number made by cubing an integer, such as $125=5^3$. Perfect cubes help when estimating cube roots.

An expression obtained by multiplying an expression by itself, such as $(x+3)^2$.

The total distance around the outside boundary of a two-dimensional shape.

The horizontal distance over which a repeating graph completes one cycle.

Lines that meet at a right angle of 90°.

A line that crosses a line segment at its midpoint and at a right angle; every point on it is equidistant from the segment's endpoints.

The shortest distance from a point to a line, measured at right angles to the line.

The shortest distance from the apex to the plane of the base, measured at right angles to the base.

Two lines that meet at a right angle of $90^\circ$.

A chart that uses repeated symbols, together with a key, to represent frequencies.

A circular chart divided into sectors whose angles represent the proportions in different categories.

The constant ratio of a circle’s circumference to its diameter, approximately $3.14159$.

A zero written to hold a place-value position without changing the number's value, as in $5.4=5.40$.

The value represented by a digit because of its position, such as hundreds, units, tenths or hundredths.

A two-dimensional view of a three-dimensional solid seen directly from above.

A flat surface that extends indefinitely in every direction within it.

A location with no length, width or area, usually shown by a dot and labelled with a capital letter.

The point where a tangent touches a circle.

A point lying on two graphs, whose coordinates therefore satisfy both graph equations at the same time.

A closed two-dimensional shape made from straight line segments.