Mathematics Glossary

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Acute angle

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An angle less than 90°.

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Adjacent

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Adjacent sides are next to each other and are joined by a common vertex.

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Algebra

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Algebra is the branch of mathematics where symbols or letters are used to represent numbers.

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Angle

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An angle is formed when two straight lines cross or meet each other at a point. The size of an angle is measured by the amount one line has been turned in relation to the other.

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Approximate

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An approximate value is a value that is close to the actual value of a number.

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Arc

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Part of a circumference of a circle.

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Area

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The amount of space a shape takes up. E.g. the area of the lawn is 35 square metres.

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Asymmetrical

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A shape which has no lines of symmetry.

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Average

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A value to best represent a set of data. There are three types of average - the mean, the median and the mode.

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Axis

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An axis is one of the lines used to locate a point in a coordinate system.