5F have been learning about lines of symmetry on 2-D shapes. They practised drawing on a mirror lines to regular and irregular shapes and using a mirror to check.
Here are some things they learnt:
- rectangles do not have a diagonal line of symmetry
- circles have an infinite number of lines of symmetry
- equilateral triangles have 3 lines of symmetry; isosceles triangles have 1 and scalene triangles do not have any.
- the number of sides of a regular shape tells you how many lines of symmetry it has e.g. a hexagon (6 sides) has 6 lines of symmetry
- some irregular shapes have no lines of symmetry but some have some – the number of sides does not help you.
- a parallelogram has no lines of symmetry
- a rhombus has 2 lines of symmetry
Tomorrow, we will look at lines of symmetry in a pattern and link it to Ancient Egyptian artwork. Keep an eye out for what we produce.