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ABCD is a quadilateral. Calculate the value of x.
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ABCD is a quadilateral. Calculate the value of x.

User Synthaze
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Since ABCD is a quadrilateral,
We know that sum of the interior angles of any quadrilateral =360
=>A+B+C+D=360
=>2x+90+x +3x=360
=>6x+90=360
=>6x=360-90
=>6x=270
=>x =270/6
=>x =45
User Serhii Londar
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