To sir,
I have a doubt,
If a 4-sided polygon is known as Quadrilateral, then why don't we call triangle a trilateral?

From Arul Gupta

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Solution

When I search Google for the definition of trilateral one of the results is a triangle. Same for trigon. Also, triangle is parallel to a third word for a quadrilateral or tetragon, namely "quadrangle". It's just not the more frequently used term. But, it's equally correct to say either triangle or trilateral.

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To sir, I have a doubt, If a 4-sided polygon is known as Quadrilateral, then why don't we call triangle a trilateral? From Arul Gupta

To sir,
I have a doubt,
If a 4-sided polygon is known as Quadrilateral, then why don't we call triangle a trilateral?

From Arul Gupta