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Turing House
Key Words and Meanings - Year 10 Maths (Higher)
  • Expressions, Trigonometry, Angles & Polygons
    Alternate anglesAlternate angles in parallel lines are equal 
    PolygonA 2D shape with straight sides 
    QuadrilateralA four sided 2D shape 
    ExpandMultiply out the brackets 
    FactorisePut an algebraic expression into brackets 
    CongruenceTwo shapes are congruent if they are exactly the same shape and size 
    IndexPower 
    Similar shapesTwo shapes are similar if one is an enlargement of the other 
    SimplifyTo gather all the like terms together into a single term 
    Corresponding anglesCorresponding angles in parallel lines are equal 
  • Data handling 1 & 2, Fractions, Decimals & Percentages
    Random sampleA sample where everyone in the population has an equal chance of being chosen 
    MeanAn average found by totalling the numbers and dividing by how many there are 
    MedianAn average found by listing the numbers in order and finding the middle number 
    Interquartile rangeThe difference between the upper quartile and the lower quartile 
    RangeThe difference between the greatest and least values  
    Stratified sampleA sample where different groups (e.g. boys and girls) are represented in sample in the same proportion as the population 
    ModeAn average found by finding the item that occurs the most often 
    Biased sampleA sample where everyone in the population does not have an equal chance of being chosen 
    Cumulative frequenciesThe total of all the frequencies in a set of data  
    Positive correlationAs one quantity increases so does the other 
    Negative correlationAs one quantity increases the other decreases 
  • Formulae & Functions & Working in 2D (bearings, area and transformations)
    FormulaA mathematical relationship or rule expressed in symbols 
    FunctionA relation between a set of inputs and a set of permissible outputs 
    Inverse functionA mathematical operation or function that exactly reverses another operation or function 
    TransformationThe act of moving or changing a shape  
    ReflectionA reflection is an image that you can see in a mirror line 
    RotationThe action of rotating about an axis or centre 
    EnlargementThe action of enlarging a shape or solid 
    TranslationThe action of moving a shape along and up or down 
    TessellationRepeating a shape to cover an area with no gaps and no overlapping 
    AreaThe amount of surface that a shape has 
  • Probability, Measures & Accuracy, and Compound Measures
    Relative frequencyExperimental probability 
    Theoretical probabilityThe likeliness of an event happening based on all the possible outcomes 
    Probability space diagramA list of all possible probability events  
    Mutually exclusive eventsTwo or more events are said to be mutually exclusive if they cannot occur at the same time 
    Independent eventsTwo events are independent if the occurrence of one does not affect the occurrence of the other 
    EstimateAn approximate calculation 
    Upper boundThe upper limit of a calculation 
    Lower boundThe lower limit of a calculation 
    Error intervalThe margin of error when rounding, usually expressed as an inequality 
  • Equations & Inequalities, Ratio & Proportion, Factors, Powers & Roots and Circles
    EquationA mathematical statement where the values of two mathematical expressions are equal (indicated by the sign =) 
    InequalityThe relation between two expressions that are greater or less then each other 
    SurdAn expression containing one or more irrational roots of numbers, such as 2√3 + 3√2 + 6 
    CircumferenceThe distance round the outside of a circle 
    RadiusThe distance from the centre to the edge of a circle 
    DiameterThe distance across a circle through the centre 
    ChordA chord is a straight line drawn through a circle which divides the circle into two parts. The line can be drawn anywhere in the circle EXCEPT the center where it becomes the diameter 
    SectorThe sector of a circle is a portion of the circle enclosed by two radii and an arc 
    SegmentThe segment of a circle is a part of the circle bounded by a chord and an arc 
    TangentA line that touches a circle 
  • Year 10 Exams, Approximate solutions and inequalities, Constructions & Loci
    IterationThe repetition of a mathematical process applied to obtain successively closer approximations to the solution of a problem 
    InequalityThe relation between two expressions that are greater or less then each other 
    Perpendicular bisectorA line which cuts a line segment into two equal parts at 90° 
    Angle bisectorA line which cuts an angle into two equal parts 
    LociThe set of all points that satisfy given conditions 
    FactorA number that divides exactly into a given number e.g. the factors of 12 are 1 & 12, 2 & 6, 3 & 4 
    MultipleA multiple is a number made by multiplying together two numbers 
    Prime factorisationTo express a number as the product of its prime factors 

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