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

  1. 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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5 Questions

Q1.
How many lines of symmetry does a rectangle have?
An image in a quiz
1
Correct answer: 2
3
Q2.
How many lines of symmetry does an equilateral triangle have?
An image in a quiz
1
2
Correct answer: 3
Q3.
How many lines of symmetry does a regular hexagon have?
An image in a quiz
4
5
Correct answer: 6
Q4.
How many lines of symmetry does this shape have?
An image in a quiz
Correct answer: 1
2
3
Q5.
How many lines of symmetry does this shape have?
An image in a quiz
Correct answer: 1
2
3

4 Questions

Q1.
There is a right angle at every vertex.
An image in a quiz
E and D
G and C
Correct answer: I and J
Q2.
It has only one pair of parallel lines.
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C and F
D and J
Correct answer: G and A
Q3.
It is a regular shape.
An image in a quiz
C and D
E and C
Correct answer: I and J
Q4.
It is not a polygon.
An image in a quiz
Correct answer: E
F
H