You are a regular 8 sided octagon
An Octogan.
If two triangles are congruent, it means that they have the same shape and size. All corresponding angles are equal, and all corresponding sides are equal in length.
Pentagon
pentagon
Any regular shaped polygon has equal angles and equal sides
pentagon pentagon
A square is a four-sided shape with all sides equal and all angles equal.
A hexagon has all six sides in equal length and all angles in equal measure.
The rectangle
square
A rhombus.
A rhombus