# Study the word list: Key Stage 3: Mathematics: irr - wei

Spellzone list
 irregular Irregular shapes have sides of unequal length. * rhombus A Rhombus has four sides of equal length but no right angles. * rotate Let us rotate the wheel. * rotation Rotation is where you twist or turn something round. * square A square is a shape with four equal straight sides and four right angles. subtraction We also did lots of mental subtraction and addition. * symmetry Line symmetry is when a line drawn through a shape leaves each side a mirror image of the other. * symmetrical To be symmetrical is when one shape becomes exactly like another if you flip, slide or turn it. * triangle Draw a triangle with three equal sides. triangular The village green is triangular in shape. tonne A tonne is 1,000 kilograms. vertex The two lines meet, creating a vertex. vertices The two types of principal vertices are called 'ears' and 'mouths'. vertical A vertical cliff is a precipice. volume Volume is usually measured in cubic centimeters. weight To win the cake you must guess its weight.

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