All prokaryotes are -celled organisms.

single

multi

variable

none of the above

Single celled organisms

Explanation: belonging to the domains Bacteria and Archaea. Prokaryotic cells are much smaller than eukaryotic cells, have no nucelus, and lack organelles. All prokaryotic cells are encased by a cell wall. Many also have a capsule or slime layer made of polysaccharide.

An alternate exterior angle is congruent because if a pair of parallel lines are cut by traversal then the alternate exterior angles are congruent.

Step-by-step explanation: