Rectangles and squares are the only ones.
They are a square and a rectangle
No only regular polygons have congruent angles.
All regular polygons with an even number of angles. All the angles of polygons with an odd number of angles are also equal but there are no "opposite" angles.
Yes, those polygons which have angles of 90 degrees and equal side lengths are called squares; those with uneven side lengths are called rectangles.
Exterior angles of all polygons total 360 degrees.
No.
They are a square and a rectangle
No only regular polygons have congruent angles.
All polygons can have right angles except for circle and ovulated shapes. The only 'regular polygon' that has a right angle is the quadrilateral.
All regular polygons with an even number of angles. All the angles of polygons with an odd number of angles are also equal but there are no "opposite" angles.
Angles cannot be equiangular: the latter is a property of polygons. Equiangular polygons are ones in which all the angles are equal.
Regular polygons are when all the sides are same length and all the angles are the same size. Irregular polygons are shapes where the sides are not all the same and the angles are different.
Yes they do
Yes, those polygons which have angles of 90 degrees and equal side lengths are called squares; those with uneven side lengths are called rectangles.
They are known as regular polygons.
Exterior angles of all polygons total 360 degrees.
For any n-sided plane figure the interior angles total 2n - 4 right angles.