square
No. Usually only opposite sides are congruent.
it has one obtuse angle and none of the sides are congrent
is a regular pentagon if all its angles are congruent and is a general pentagon if they are not.
isosceles
No.
A polygon whose sides are all equal is known as a regular polygon. Some examples include squares and equilateral triangles.
A polygon with all sides and angles the same is called a "regular polygon."
A regular polygon is a polygon with congruent sides and interior angles.
A polygon that all sides and angles are the same measurement is a regular polygon.
A rhombus, or a square if there's a right angle. ( if there's one, there must be 4!)
It all depends on what kind of polygon it is. It may have no congruent sides or all congruent sides.
It is an equilateral polygon. It is not a regular polygon. For the polygon to be regular, it is not enough for the sides to be congruent: all the angles need to be congruent as well.