Yes. One can have congruent pentagons.
Trace it from the pentagon that you want it to be congruent to!
If it is a regular pentagon then it will have 5 congruent sides.
A regular pentagon has 5 congruent sides
No, a regular pentagon cannot have congruent sides but non-congruent angles. By definition, a regular pentagon has all sides of equal length and all interior angles equal. In a regular pentagon, the angles are each 108 degrees, ensuring that both the sides and angles are congruent. If the sides are congruent but the angles are not, it would be classified as an irregular pentagon instead.
i don't know; that person is wrong it is a regular pentagon that has all sides congruent
Not necessarily; if it is a regular pentagon, then yes.
No. A small pentagon will have smaller diagonals than a large pentagon! However, all the diagonals of a regular pentagon will be congruent.
a regular pentagon or just a pentagon
No they can not be congruent because they are different shapes.
An... irregular pentagon?
In general, no.
no