Question

Explain how a triangle is a special kind of polygon?

Answer 1

At least 3 sides are needed to form a polygon

Explanation:

A triangle is a special polygon because it has the LEAST number of sides possible which is 3 sides. It is impossible to form a polygon with 1 or 2 sides.

Hope that helps

Answer 2

It might help to know the definition of a polygon.

Explanation:

A polygon is a 2-dimensional, many-sided closed figure . The sides must be straight lines and the shape must close on itself. The smallest number of sides which can be used is 3, forming a triangle. Triangles and quadrilaterals are all polygons as are pentagons, hexagons etc...