Primary School (English Medium) Class 3 - CBSE Question Bank Solutions for Mathematics

Do the things with straight edges have corners?

Do the things with curved edges have corners?

Try to find things which have both straight and curved edges.

1. Take a rectangular sheet of paper.
2. Count its corners.
3. 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?
4. Repeat the activity with a square sheet of paper.
5. 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.

In the following figures, tick (√) those which have corners. 

Do these figures have curved lines?

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

How many triangles do you have in your set? Are all of them equal in size? Find out.

Use the two small triangles in the tangram set to get the following shapes:

(1)	(2)	(3)

Take pieces 4 and 5 from the set and find out on which side of the triangle you can join the other piece.

Find matching sides among the following pairs of pieces.

1. Pieces 1 and 2
2. Pieces 2 and 4
3. Pieces 1 and 5
4. Pieces 2 and 5

Use only triangles

Use pieces 1, 2, 3 and 5

Use only two triangles

Use pieces 1, 2, 3, 4 and 5

Which geometrical shapes can you identify in these borders? Draw them in your notebook.

Is any shape repeating in a particular pattern? Which ones?

Are the shapes made of

1. Curved lines
2. Straight lines
3. Both curved and straight lines.

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