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Find giving reasons, the measres of angl...

Find giving reasons, the measres of angles a,b,c,d and e.

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`(i) a=65^(@) and b=c=115^(@) (ii) a=110^(@),b=70^(@),c=40^(@)(iii) a=b =65^(@) andd=55^(@) (iv) a=b=d=e=65^(@), c=115^(@)`
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