Chapter - 4 - EXERCISE 4.3 - Playing with Numbers (NCERT Class 6th Maths Solution)

1. Name the angles in the given figure.

Solution/Explanation:

There are four angles in given figure:

∠ABC, ∠CDA, ∠DAB, ∠DCB

2. In the given diagram, name the point(s) (a) In the interior of ∠DOE (b) In the exterior of ∠EOF (c) On ∠EO

Solution/Explanation:

(a) Point interior of ∠ DOE : A

(b) Points exterior of ∠ EOF: C, A, D

(c) Points on ∠ EOF : E, O, B, F

3. Draw rough diagrams of two angles such that they have

(a) One point in common.

(b) Two points in common.

(c) Three points in common.

(d) Four points in common.

(e) One ray in common.

Solution/Explanation

(a) $\angle AOB$ and $\angle COD$ have point O in common.

(b) $\angle AOB$ and $\angle BOC$ have points O and B in common.

(c) $\angle AOB$ and $\angle BOC$ have points O, D and B in common.

(d) $\angle AOB$ and $\angle BOC$ have points O, D, E and B in common.

(e) $\angle AOB$ and $\angle BOC$ have ray $\vec{OB}$ in common

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