If the three angles of a quadrilateral are 120°,130°,10° then what is the fourth angle?

360?-(120?+130?+10?)
=360?-260?
=100?
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360°-(120°+130°+10°) 
=360°-260°
=100°



 
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Holla
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The above solution is right!
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100 
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100
 
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100 due to angle sum property
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The answer is 100.
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sum of a quadrilateral is 360 degree

100 degree is the value of fourth angle

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