A square
A polygon with 2n sides (n>1) can have opposite angles congruent.
its a shape
rectangle
No. A trapezoid is a 4-sided flat shape with straight sides that has a pair of opposite sides parallel. The opposite angles not congruent.
polygon
A parralelogram
How about a square or a rectangle
a trapeziod
a congruent shape HAS TO HAVE ALL CONGRUENT ANGLES OR IT WOULDNT BE A CONGRUENT sHAPE
Yes. All sides of a rhombus are the same length, but there of two sets of equal opposite angles, which cannot all be equal, or the shape is a square.
A square or a rectangle perhaps?
A square