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1.  Find the pairs of supplementary angles in Fig  :

                   Find the pairs of supplementary angles in Fig 5.7:

 

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We know that the sum of the supplementary angle is 180^{\circ}.

(i)  Sum of the angles is :   =\ 110^{\circ}\ +\ 50^{\circ}\ =\ 160^{\circ}.  Hence the angles are not supplementary.

(ii) Sum of the angles is :  =\ 105^{\circ}\ +\ 65^{\circ}\ =\ 170^{\circ}.  Thus the angles are not supplementary.

(iii) Sum of the angles is :   =\ 50^{\circ}\ +\ 130^{\circ}\ =\ 180^{\circ}. Hence the angles are supplementary to each other.

(iv) Sum of the angles is :   =\ 45^{\circ}\ +\ 45^{\circ}\ =\ 90^{\circ}. Thus the angles are not supplement to each other. 

 

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Sanket Gandhi

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