A regular pentagon will not tessellate.
No.
Yes
transversal
Some 3D shapes will tessellate as for example a brick wall
Yes because all 4 sided quadrilaterals will tessellate
1) because the unit has a bulbous shape (the outer glass bit) 2) because the unit produces/emits light. The name is an exact description of that it does and its shape.
Yes it does tesselate.
Usually not. A part of a circular shape will not.
The prefix "B10" refers to the bulb shape. In this case, it indicates that the light bulb has a bullet-shaped design. This type of bulb is commonly used in chandeliers and decorative lighting fixtures.
Probably the best description would be a truncated pear shape.
No it does not tessellate you have to pentagons in order for it to tessellate. * * * * * It is not at all clear what "have to pentagons" has to do with this. No polygon with 7 or more sides will tessellate. Octagons will tessellate if mixed with squares but that is not "proper" tessellation since it involved more than one shape.