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Grade 6 Maths: Symmetry, transformations and position poster

A one-page CAPS Grade 6 Maths poster on symmetry, transformations and position (Shapes and space), with the key ideas, key words and a tip to remember.

CAPS Grade 6MathsShapes and spaceFree
Maths · Grade 6 · Shapes and space
Symmetry, transformations and position

1Lines of symmetry

A line of symmetry cuts a shape into two halves that are mirror images. A regular polygon has as many lines as sides.

Example

A regular pentagon has 5 lines of symmetry.

2Reflection

Every point goes to the other side of the mirror line, the same distance away. The shape keeps its size.

3Translation and rotation

  • Translation: slide the shape. Do not turn it.
  • Rotation: turn the shape about a point. A quarter turn is 90°. A half turn is 180°.
Example

A half turn makes a shape upside down.

4Enlargement and reduction

Multiply every length by the same number to enlarge. Divide every length to reduce.

Example

A triangle with sides 2, 3 and 4 cm,
enlarged 3 times: 6, 9 and 12 cm

5Tessellation

A shape tessellates when copies fit together with no gaps and no overlaps. Squares, rectangles, triangles and regular hexagons tessellate. Circles do not.

6Grid references

Give the column letter first. Then give the row number.

ABCDE1234hutpond
Example

The pond is in square D1.

Key words

line of symmetry
a line that cuts a shape into two mirror images
reflection
a flip over a mirror line
translation
a slide in a straight line
tessellate
cover a surface with no gaps or overlaps
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