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Question

ABCD is a cyclic quadrilateral such that A=90o,B=70o,C=95o and D=105o.
The statement is:

A
true.
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B
false.
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C
true in special condition.
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D
Data insufficeint
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Solution

The correct option is B false.
Given, ABCD is a cyclic quadrilateral where A=90o,B=70o,C=95o & D=105o.
Since ABCD is a cyclic quadrilateral,
then A+C=180o and B+D=180o......(i)(The sum of the opposite angles of a cyclic quadrilateral is 180o)
But here, A+C=90o+95o=185o and B+D=70o+105o=175o.
This is a contradiction to (i).
That is, the statement is false.
Hence, option B is correct.

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