Year 5
2D and 3D shape: To identify regular and irregular polygons by reasoning about equal sides and angles
Year 5
2D and 3D shape: To identify regular and irregular polygons by reasoning about equal sides and angles
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Lesson details
Key learning points
- In this lesson, we will investigate the properties of similarities and differences between regular and irregular polygons and identify the number of sides and angles that make up different shapes.
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This content is made available by Oak National Academy Limited and its partners and licensed under Oak’s terms & conditions (Collection 1), except where otherwise stated.
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5 Questions
Q1.
How many lines of symmetry does a rectangle have?
1
3
Q2.
How many lines of symmetry does an equilateral triangle have?
1
2
Q3.
How many lines of symmetry does a regular hexagon have?
4
5
Q4.
How many lines of symmetry does this shape have?
2
3
Q5.
How many lines of symmetry does this shape have?
2
3
4 Questions
Q1.
There is a right angle at every vertex.
E and D
G and C
Q2.
It has only one pair of parallel lines.
C and F
D and J
Q3.
It is a regular shape.
C and D
E and C
Q4.
It is not a polygon.
F
H