Answers

2016-02-23T21:11:54+05:30
Yes. in cointerion angles if one is 90 the other will also be 90. because 180-90=90.




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2016-02-23T21:34:39+05:30
Yes.....................it is
 because  we know that 180 -90=90      
           90 is a co interior angle
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