Sometimes.
By definition, a semi-regular tessellation must include more than one type of regular polygon. Some uniform tessellations use more than one type of regular polygon, but many uniform tessellations use only a single regular polygon. Therefore the statement is only sometimes true.
See the answer below.
Yes. For example, dodecagons, squares and triangles.
A uniform tessellation is a pattern of shapes that completely covers a surface without any gaps or overlaps, where all the polygons used are regular and identical in shape and size. Each vertex in a uniform tessellation has the same arrangement of polygons around it, creating a visually harmonious design. Common examples include the tessellation of regular triangles, squares, and hexagons. These patterns can be found in various fields, including art, architecture, and mathematics.
Yes it is a tessellation.
A tessellation that uses more than one kind of regular polygon is called a semi-regular tessellation.
false
See the answer below.
true
Yes. For example, dodecagons, squares and triangles.
By the use of wording "uniform" you are in fact stating that the tesselations are "regular"
MC Escher made a series of etchings using space filling shapes - a form of tessellation, although not uniform tessellation.
answer
must all edges of semiregular polyhedron be the same length
Yes it is a tessellation.
Non-visible tessellation or non-existent tessellation, perhaps.
How to Make a Tessellation?
A regular tessellation or semi-regular tessellation or none.