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4. Take a square dotted paper and draw different polygons with 3, 4, 5 and 6 sides.
Identify which polygon has 1 right angle, 2 right angles and 3 or more right angles.

5. State whether the following statements are true or false. Correct the false
statements.

a. All squares are rectangles. b. All rectangles are squares.

c. A polygon has two sides. d. There are four vertices in any square.
e. All quadrilaterals are rectangles. A
1 8
6. A spider makes a web as shown alongside. How many 9
triangles do you see in this web? The spider wants to
walk and check if the walls of her web are strong. Can 2 14 7
she begin at point A and come back to the same point 10 13
without walking on any wall more than once? 15 12
3 16 6

11
4 5

CiRCleS

Do you know about Big Ben?

Big Ben is a famous clock tower in London,
England. Look at its picture alongside. What
shape does it remind you of? The Big Ben clock
reminds us of the shape of a circle.

You can see many objects which have the
shape of a circle. Look at these objects and
observe their shapes.

Tips

The shape of each object represents a circle. A circle
is a simple closed curve. The word “circle” has its origins
in the Latin word “circulus,”
which means a circular figure
or a small ring.

124 Mathematics 4