Loading…
Loading…
GCSE Mathematics
861 key terms
Geometric sequence
A pattern in which consecutive terms have a constant multiplicative ratio.
Glide reflection
A reflection followed by a translation parallel to the mirror line, which cannot in general be replaced by a single reflection, rotation or translation.
Gradient
The change in the vertical coordinate divided by the corresponding change in the horizontal coordinate.
Graph
A picture of the points whose coordinates satisfy an equation.
Graphical misrepresentation
A representation of data that creates a false or distorted impression, for example through its scale, labels or visual design.
Graphical solution
A value found from a graph rather than exactly by algebra, so its accuracy is limited by the scale and drawing.
Graph of a function
The set of points representing a function on coordinate axes, usually written in the form .
Graph transformation
A change to a graph's position or orientation according to a stated rule.
Grouped data
Data presented in classes or intervals rather than as individual values.
Growth
A change in which a quantity increases over time, often by the same proportion or percentage in each period.
Head
The finishing point of a drawn vector, marked by the arrowhead.
Hectare
An area equal to 10,000 square metres, commonly used for measuring land.
Hemisphere
Half of a sphere, with one curved surface and one flat circular face.
Highest common factor
The greatest factor shared by every term in an expression.
Highest common factor (HCF)
The greatest positive whole number that divides each of the given numbers exactly.
Histogram
A diagram for grouped numerical data in which class intervals form touching bars and each bar's area represents its frequency.
Hundredth
One of one hundred equal parts of a whole; the second place to the right of the decimal point.
Hypotenuse
The longest side of a right-angled triangle, opposite its right angle.
Identity
An equality that is true for every permissible value of its variables; it is often written using .
If and only if
A statement meaning that each of two conditions implies the other, so both directions must be true.
Image
The shape produced by a transformation.
Impossible
An event that cannot happen; its probability is 0.
Improper fraction
A fraction whose numerator is greater than or equal to its denominator, such as .
Included angle
The angle formed by the two sides being used in the area formula.
Included angle or side
The angle between two specified sides, or the side between two specified angles.
Included endpoint
A point represented by a filled circle because its value is part of the solution set.
Inclusive inequality
An inequality using or , in which the boundary value is included.
Income tax
Tax paid on taxable income, such as earnings.
Independent events
Events for which the occurrence of one does not change the probability of the other.
Index
A small raised number showing a power; for example, the index in means that is multiplied by itself.
Sign up to access full revision notes and track your progress across all key terms.