Shape and space · Usually met around P3
Symmetry
From “Symmetric shapes and lines of symmetry” to “Folding paper, cutting and punching holes”, step by step, each skill with its methods, worked examples and answers.
Skills in this topic, easy to hard
- Symmetric shapes and lines of symmetryFold on the line: the halves must match exactly
- How many lines of symmetry a shape hasTry every fold: upright, flat, slanting. A circle has infinitely many
- Completing symmetric shapes on squared paperThe same distance from the line; a square on a slanting line is its own partner
- Rotational symmetry: turn it and it looks the sameTurn it once round: count the times it looks the same
- Folding paper, cutting and punching holesEach fold doubles the layers; opening flips the holes across the crease
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