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  • Check which of the following pairs of angles form a linear pair :

1. Check which of the following pairs of angles form a linear pair (Fig):

          Check which of the following pairs of angles form a linear pair (Fig 5.13)

                            

             

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The sum angles of linear pair is 180^{\circ}.

(i) Sum of the given angles is :   =\ 40^{\circ}\ +\ 140^{\circ}\ =\ 180^{\circ}. Thus these are linear pair.

(ii) Sum of the given angles is :   =\ 60^{\circ}\ +\ 60^{\circ}\ =\ 120^{\circ}. Thus these are not linear pair.

(iii) Sum of the given angles is :   =\ 90^{\circ}\ +\ 80^{\circ}\ =\ 170^{\circ}. Thus these are not a linear pair.

(iv) Sum of the given angles is :   =\ 115^{\circ}\ +\ 65^{\circ}\ =\ 180^{\circ}. Thus these are linear pair.

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Sanket Gandhi

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