Question

three angle of a quadrilateral are 75 , 90,105find the fouth angle​

Answer 1

Answer:

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Step-by-step explanation:

Hope you got your answer.

Answer 2

Answer:

$90$

Step-by-step explanation:

$given$

$first \: angle = 75$

$second \: angle = 90$

$third \: angle = 105$

$fourth \: angle = ? \\ let \: x \: be \: an \: fourth \: angle$

$75 + 90 + 105 + x = 360$

$x + 270 =360$

$x = 360 - 270$

$x = 90$

$fourth \: angle = 90$