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Question
Using only straight lines, can you draw a figure which has no corners?
Solution
No, we can’t draw a figure which has no corners.
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RELATED QUESTIONS
Colour the clown following the directions given below :
Triangles 
Squares 
Rectangles 
Circles 
How many triangles are there in the following figures?
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Do the things with straight edges have corners?
Try to find things which have both straight and curved edges.
- Take a rectangular sheet of paper.
- Count its corners.
- Now fold one of its corners.
a) How many corners does it have now?
b) How many corners will you get by folding
i) 2 corners
ii) 3 corners
iii) 4 corners
c) Can you fold this paper in such a way that it has only three corners? You are allowed only two folds.
What shape will you get? - Repeat the activity with a square sheet of paper.
- Can you fold all the corners of the square sheet in such a way that the number of corners remains unchanged?
Look at the following table and tick (√) the names of things that have corners. Also count the number of edges and corners in ea.ch of them.
| Name of thing | Whether it has corners | Number of edges | Number of corners |
| Die | Yes | 8 | |
| Ball | |||
| Eraser | |||
| Egg | |||
| Sheet of paper |
In the following figures, tick (√) those which have corners.
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Do these figures have curved lines?
How many triangles do you have in your set? Are all of them equal in size? Find out.
Find matching sides among the following pairs of pieces.
- Pieces 1 and 2
- Pieces 2 and 4
- Pieces 1 and 5
- Pieces 2 and 5
Which geometrical shapes can you identify in these borders? Draw them in your notebook.
