ML AGGARWAL CLASS 8 Chapter 16 Symmetry Reflection and Rotation Exercise 16.1

 Exercise 16.1

Question 1

Sol :
(i) One 










(ii) One 







(iii) Zero 


(iv) Four












(v) Three











(vi) Four












Question 2

Sol :

(i) zero










(ii) zero









(iii) Two









(iv) Four












(v) Three








(vi) Four







Question 3

Sol :
Given 

AB=5.3cm

BC=3 cm

1. Draw straight line AB=5.3 cm

2.Draw 90 line to AB at point B

3. Cut at a distance BC = 3cm and note the point 'C'

4.Now drew 5.3cm are from C and 3cm arc from A , Intersection point is D.

5. Join CD and AD. Then ABCD is a required rectangle

$\Rightarrow$ Two symmetry lines













Question 4

Sol :
Given
AB=5.3 cm

$\angle A=60^{\circ}$

1.Draw AB = 5.3cm

2.At A, construct $\angle B A P=60^{\circ}$

3.From AP, Cut off AD = 5.3cm, draw aware.

4.With D as centre and radius 5.3cm , draw aware to meet the previous arc at C

5.Join BC and CD. Then ABCD is the required rhombus.




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