yes if they have sides of equal length
Not normally but yes when they are congruent to each other.
It is a tessellation which uses two regular polygons. For example, octagons and squares.
Some are some are not. Two regular pentagons with one equal side are congruent.
The term congruent is used in comparing two geometrical figures, it does not fit in this context. The angles of a regular polygon are equal.
They are only congruent if they are also the same size. Otherwise they are merely similar.
They have sides of equal length.
Some forms of irregular octagons.
Any regular polygon has two congruent faces. Many polygons have two or more congruent faces.
Not normally but yes when they are congruent to each other.
Congruence is a relationship between two shapes. ANY one shape cannot be congruent.
It is a tessellation which uses two regular polygons. For example, octagons and squares.
Any polygon can have, and every regular polygon has.
never ever ever
There is no such thing as a seni-regular tessellation. A semi-regular tessllation is a tessellation using two regular polygons: for example, octagons and squares together.
For two 7 sided regular heptagons to be congruent they must be identical in shape and size.
No Internat angle of a regular octagon is 135°. No multiple of 135° will make 360°. Thus at any point there can be at most two octagons and a 90° gap. Ratty
Some are some are not. Two regular pentagons with one equal side are congruent.