No. If you take the first four equal lengthed sides of the shape separated by three right angles the end of the fourth would touch the start of the first forming a square. The fifth side could not exist.
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.
An... irregular pentagon?
yes
no
is a regular pentagon if all its angles are congruent and is a general pentagon if they are not.
A regular pentagon
Sometimes. For a regular pentagon, all the sides and interior angles are congruent. However, this isn't the case for some pentagons.
A right trapezoid can have no congruent sides and two right angles.
A parallelogram with no right angles and four congruent sides is a Rhombus.
Rhombus. Because a Rhombus has four congruent sides but no right angles.
Rhombus: A Rhombus has four congruent sides but no right angles.
A rhombus is a parallelogram with all four sides congruent to each other with no right angles. A square is a parallelogram with four congruent sides and four right angles.