The polygon may have 2n sides, where n is any whole number greater than 1
A regular triangle, pentagon, heptagon, nonagon, etc ie Any regular polygon with an odd number of sides.
They are equal.
Smallest possible interior angle of regular polygon is 60 degrees (triangle). The greater the number of sides, the greater each interior angle. If exterior angle is 30 degrees, the polygon has 12 sides.
A regular pentagon is convex. By taking a regular pentagon and shortening or lengthening one or more sides, an infinite number of possible convex pentagons can be created. A convex polygon is defined as a polygon such that all internal angles are less than or equal to 180 degrees, and a line segment drawn between any two vertices remains inside the polygon. It is possible to have non-convex (concave) pentagons; there are infinite number possible ways to do this, too.
There is no largest polygon - just as there is no largest number.
The polygon may have 2n sides, where n is any whole number greater than 1
There are infinitely many possible answers. For example, any regular polygon with an even number of sides.
There is no mathematical limit to the number of sides that a polygon can have. As the number of sides increases the polygon will become more and more like a closed curve - a regular polygon will become like a circle. The size of the polygon and accuracy of measurement will determine when it is no longer possible to distinguish between the polygon and the curve. Nevertheless, the two shapes will be mathematically different objects.
There is no such thing as a largest polygon, just as there is no largest number. You can always add one more to a number - or add one more side to get a bigger polygon.
8
A concave hexagon can have 6 perpendicular sides if you count the external angle of one. The angles would be 90, 90, 90, 90, 90, 270
The number of sides possible in a polygon is a minimum of 3, with an unlimited maximum. For a regular polygon, as the number of sides approaches infinity, it approaches the shape of a circle.
There is no limit to the number of sides that a polygon can have. Mathematically, a circle is equivalent to a polygon with an infinite number of sides.
You can have any number greater than 2. There is no limit.
If it's a regular polygon, and you know the length of the perpendicular from the center to the middle of a side, and the length of a side, A = LNS, where L is the length of the perpendicular, N is the number of sides, and S is the number of sides. See the link for a more detailed explanation of various ways to compute the area of regular polygons.
A polygon with the least number of sides is a triangle (3 sides)