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Question
Now make these 4, 5, 6 sided shapes by using tube pieces and matchsticks.
Find out how many angles are there in each of these shapes. Mark them.
Now push each shape downwards with the tip of your finger.
Does the angle change when pushed down by the finger?
Solution
Students must try on their own.
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Now push each shape downwards with the tip of your finger.
Does the angle change when pushed down by the finger?
Find out and write your results in the table given:
| Shape | Change in angle Yes/No |
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 |
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 |
|
 |
Look for triangles in the pictures below.
From the activity ‘Changing Shapes’ can you guess why triangles are used in these towers, bridges, etc.?
Now make these 4, 5, 6 sided shapes by using tube pieces and matchsticks.
Find out how many angles are there in each of these shapes. Mark them.
Look for triangles in the pictures below.
Look around and find out more places where triangles are used.
