trigon.
A 3 sided polygon
No. A three-sided polygon is, by definition, a triangle.
A triangle is a 3 sided polygon
A 3 side polygon is a TRIANGLE.
A triangle is a polygon, though trigon is an alternative name for a 3 sided polygon.
A triangle is a 3 sided polygon
triangle
A triangle is a 3 sided polygon.
An isosceles triangle is a 3 sided polygon.
Triangle
The name of the angle which has three sided polygon called Triangle.
No, it is not. A quadrilateral is a 4-sided polygon. A triangle is a 3-sided polygon. Therefore, whatever way you turn it, a triangle will never be a quadrilateral.