Page 90 - Start Up Mathematics_6

3. In the given figure a circular region is divided into 6 equal parts. B C

(a) What fraction of the whole circle is the sector EOD?
(b) How many times ∠AOD is of ∠EOD? A O D

F E
Thinking Skills

1. Examine the given figures and explain whether they are polygons or not.

(a) (b)

2. Can a sector and a segment of a circle coincide?
3. The given figure has two concentric circles with centre O. Answer the following:

(a) Name four chords.
(b) Name three diameters.
(c) Write four equal line segments. U Q

(d) What is represented by the region SOU? O S
(e) What is represented by the region STV? R
4. Identify which arc is minor and which is major. P T V

(a) (b)

5. Find the number of (a) triangles and (b) squares in the given figures?

(a) (b)

Some NCERT Textbook Questions

1. Classify the following curves as (a) Open or (ii) Closed.

(a) (b) (c) (d) (e)

2. Consider the given figure and answer the questions:
(a) Is it a curve? (b) Is it closed?

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