Page 201 - Mathematics Coursebook

Glossary

square millimetre (mm ) unit of area; translate transform a shape, resulting in
2
area of a square of side 1 millimetre 170 each part of the shape being moved the same
square number the result of multiplying a distance in the same direction 161
whole number by itself; 81 is a square number translation see translate 161
equal to 9 × 9 (81 = 9 ) 16 transversal a line that crosses two or more
2
square root the square root of a number, parallel lines 60
multiplied by itself, gives that number; the trapezium quadrilateral with one pair of
square root of 36 is 6 ( 36 = 6) 16 sides parallel 87
square-based pyramid a solid with a triangular prism a solid whose two ends,
square base and four triangular faces 87 and its cross-sections, are identical and
statistic a value calculated from a parallel triangles 87
set of data 105 triangular-based pyramid a solid with
straight line a line that is not curved 120 four triangular faces 87
substitute replace part of an expression, unitary method solving direct proportion
usually a letter, by another value, usually problems by "rst calculating the value of a
a number 28 single item 140

surface area the area of the faces of a unknown a letter (or letters) in an
solid or 3D shape 177 equation, for which the value (or values)
symmetrical has at least one line of is yet to be found 26
symmetry, or rotational symmetry of order unlikely less than an even chance 153
two or more 89 variable a symbol, usually a letter,
term an individual number in a sequence 20 that can represent any one of a set of values 26
term-to-term rule a rule to "nd a term vertex a point where edges of a 2D or
of a sequence, given the previous term 20 3D shape meet 87
terminating ending; a terminating vertically opposite angle two of the four angles
decimal has a "nite number of decimal formed when two lines cross; they do not
places, it does not go on for ever 75 have a common side 60
theoretical probability a probability vertices plural of vertex 87
found using equally likely outcomes 158 very likely a high change of happening 153
time a way of putting events in order or very unlikely a small chance of happening 153
measuring their duration 144 volume the space occupied by a solid or
tonne (t) one thousand kilograms 47 3D shape 175
top-heavy fraction common term for an whole number the numbers 0, 1, 2, 3, 4, … , … 7
improper fraction 80 x-axis the horizontal axis on a grid 129
transformation movement of a shape by y-axis the vertical axis on a grid 129
re!ection, rotation or translation 161

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