Do the things with curved edges have corners?

One Line Answer

No, things with curved edges have no corners.

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Shapes and Designs

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Chapter 5: Shapes and Designs - Edges and Corners [Page 64]

Chapter 5 Shapes and Designs
Edges and Corners | Q c) | Page 64

How many triangles are there in the following figures?

Looking at the picture given above, can you tell who is out?

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.

Using only straight lines, can you draw a figure which has no corners?

Which two pieces of the tangram set are exactly same? Find out.

Find matching sides among the following pairs of pieces.

Look at your cloths, your mother’s saris/shawls, rugs and mats. Can you identify some patterns? Draw them in your notebook.

Among the following, can you match the tiles with the designs that they will make on the floor? Draw lines to match.

Use different colour combinations to make your own patterns.