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Shape and space · Usually met around P3

Parallel lines, quadrilaterals and triangles

From “Parallel lines” to “Colouring a map”, step by step, each skill with its methods, worked examples and answers.

Skills in this topic, easy to hard

  1. Parallel linesNever meeting, however far extended: parallel. On dot paper, compare the moves
  2. Parallelograms and trapeziumsTwo parallel pairs: parallelogram; one pair: trapezium
  3. Kinds of triangleCount the equal sides, then look for a right angle
  4. Three sides of a triangleThe two shortest together must beat the longest
  5. Curve stitchingThe two numbers add up to the number of points plus 1
  6. Colouring a mapA ring: even needs 2 colours, odd needs 3
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