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The internal angle of a three-sided polygon is 360° and that of quadrangle is 180°.(a) True(b) FalseThis question was addressed to me in a job interview.I'm obligated to ask this question of Properties of Polygons-2 in chapter Quadrilaterals of Mathematics – Class 8

Answer»

The correct option is (b) False

The best explanation: The sum of internal angle of a three-sided polygon is 180° and that of a QUADRANGLE is 360°; because a quadrangle can be SPLIT into TWO triangles and we KNOW that the sum of interior angles of the TRIANGLE is 180. So, two times 180 is 360.



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