A square, pentagon, decagon, octagon are always regular polygons.
A regular octagon has eight equal sides, but in general the sides of an octagon don't have to be equal as long as there are eight of them.
No. An octagon is an 8 sided polygon. The only rigid polygon is a triangle.
A square.
A regular octagon has 8 sides.
An 8 sided octagon can be either regular or irregular in shape.
A polygon with eight sides, regular or not, is an octagon. There isn't a special name for a regular octagon (other than "regular octagon").
A regular octagon has 8 sides similarly to an octagon. The name regular octagon means that all angles are the same, therefore inferring that all sides are of equal length.
A shape with eight sides is always an octagon. If all angles and sides are equal, it is called a regular octagon.
hexagons, triangles, rectangles, trapizoids, and many other shapes. circles do not tessallate
In an octagon, the sum of all exterior angles is always 360 degrees. Therefore, each exterior angle of an octagon measures 360 degrees divided by 8, which equals 45 degrees. This means that each exterior angle of an octagon is 45 degrees.
In a regular octagon, each angle is 135 degrees. If the octagon is not regular, then it can have as many as 6 right angles in it.