a "regular" one
A regular polygon is a polygon whose sides are equal length and whose angles are all the same value. A non regular polygon is just the opposite of a regular polygon.
A triangle (not traingle) is a polygon. It can be a regular polygon but need not be.
it seems to me that the only polygon of your description is a square
A triangle in general is just a polygon. An equilateral triangle is a regular polygon.
A 6 sided hexagon polygon can be regular or irregular.
a "regular" one
A regular polygon is a polygon whose sides are equal length and whose angles are all the same value. A non regular polygon is just the opposite of a regular polygon.
A triangle (not traingle) is a polygon. It can be a regular polygon but need not be.
All the sides of a regular polygon have the same length. If two or more sides of a polygon have different lengths, then the polygon is not regular.
Yes, a regular polygon has all sides of equal length. An irregular polygon is any polygon that is not regular.
No a trapezoid is not a regular polygon
what is a regular polygon
A trapezoid is not a regular polygon.
it seems to me that the only polygon of your description is a square
Yes, a regular polygon is a type of polygon where all the sides and angles are equal.
No. There can be no regular concave polygon.