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Application and Scope of Polygon Inequality Postulate

Polygon Inequality Postulate works upon the inequality relationship in two polygons i.e. the triangle and the quadrilateral.

Triangle Inequality Postulate: The Triangle Inequality Postulate states that the sum of the lengths of two sides of any triangle is greater than the length of the third side.

triangle
For the above triangle:

a + b > c
b + c > a
a + c > b

Quadrilateral Inequality Postulate:  the Quadrilateral Inequality Postulate states that the sum of the lengths of 3 sides of any quadrilateral is greater than the length of the fourth side.



 
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