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E:\Working\Orange_Education\TouchPad_Maths-5\Open file\Maths_5_Chapter-06
\ 19-Nov-2025 Bharat Arora Proof-9 Reader’s Sign _______________________ Date __________
Here is a chart of rotational symmetry.
order of Angle of
Shape rotational Fraction of a turn rotational
symmetry symmetry
Rectangle 1
2 turn 180°
2
Equilateral Triangle 1
3 3 turn 120°
Square 1
4 turn 90°
4
Regular Pentagon 1
5 turn 72°
5
Regular Hexagon 6 1 turn 60°
6
Regular Octagon 1
8 turn 45°
8
Regular Nonagon 1
9 turn 40°
9
Regular Decagon 1
10 turn 36°
10
Some letters, such as O, X, H and I, exhibit rotational symmetry.
21 st
Activity Century #Experiential Learning,
Skills #Creativity
• Trace the square and triangle given below and cut out some identical pieces.
• Arrange the pieces on a sheet of paper so that the design you create has both
reflection and rotational symmetry. For example:
150 Mathematics 5
