Identify different types of triangle
I can identify different types of triangles and describe their properties.
Identify different types of triangle
I can identify different types of triangles and describe their properties.
Lesson details
Key learning points
- All triangles have 3 straight sides and 3 vertices.
- Equilateral triangles have 3 equal sides and 3 equal angles.
- Isosceles triangles have 2 equal sides and 2 equal angles.
- Scalene triangles have no equal sides and no equal angles.
Common misconception
Some children may find it harder to recognise the type of triangle when they are drawn in different positions and orientations.
Allow time for children to manipulate the triangles so that they can see them in different orientations and build their understanding of the properties of each type of triangle.
Keywords
Equilateral triangle - Equilateral triangles have 3 equal sides and 3 equal angles.
Isosceles triangle - Isosceles triangles have 2 equal sides and 2 equal angles.
Scalene triangle - Scalene triangles have no equal sides and no equal angles.
Licence
This content is © Oak National Academy Limited (2024), licensed on Open Government Licence version 3.0 except where otherwise stated. See Oak's terms & conditions (Collection 2).
Video
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Starter quiz
6 Questions
3
4
5
6
8
a quadrilateral.
a pentagon.
a hexagon.
an octagon.
Exit quiz
6 Questions
This triangle has no equal sides and no equal angles.
This triangle has three equal sides and three equal angles.
This triangle has two equal sides and two equal angles.
no equal sides and no equal angles
two equal sides and two equal angles
three equal sides and three equal angles