It is a regular polygon.
A right trapezoid can have no congruent sides and two right angles.
"No congruent sides" means: a polygon or prism that has no two sides that are exactly alike.
A trapezoid.
isosceles
How about an isosceles triangle of which 2 of its 3 sides are congruent and 2 of its 3 angles are congruent
How about an isosceles triangle of which 2 of its 3 sides are congruent and 2 of its 3 angles are congruent
An isosceles triangle has 3 sides 2 of which are congruent and 3 interior angles 2 of which are equal in size
A parallelogram.
A four-sided polygon with congruent sides and angles, and two pairs of parallel sides.
Providing it has no right angles then it is a scalene triangle.
It is a rectangle. If all four sides are congruent, then the rectangle is also a square.
A polygon.
It is a regular polygon.
A right trapezoid can have no congruent sides and two right angles.
A parallelogram cannot have only two congruent sides, nor only two congruent angles.
A square is a four-sided polygon with two congruent parallel sides.