A rectangle has 4 perpendicular sides that meet each other at right angles.
Not normally but as a rectangle it has perpendicular sides that meet at right angles
If it did it would be a rectangle
Aquadrilateral that is called a rectangle has by definition 4 right angles (all sides are perpendicular to their neighbors) and opposite sides that are equal in length and parallel.
The sides of a rectangle are not all equal so a rectangle is not a regular polygon. And, as a consequence, any 3-dimensional shape made from rectangles cannot be a regular polyhedron.
A rectangle has 4 perpendicular sides that meet each other at right angles.
Not normally but as a rectangle it has perpendicular sides that meet at right angles
If it did it would be a rectangle
Aquadrilateral that is called a rectangle has by definition 4 right angles (all sides are perpendicular to their neighbors) and opposite sides that are equal in length and parallel.
A regular pentagon does not have any perpendicular sides. A pentagon is made up of five sides. An irregular pentagon which has sides that are not equal may have a perpendicular side.
A parallelogram doesn't necessarily have any perpendicular sides, but it can. If it has one single 90-degree angle, then it has four of them, and it's a rectangle.
A parallelogram doesn't necessarily have any perpendicular sides, but it can. If it has one single 90-degree angle, then it has four of them, and it's a rectangle.
A "regular" polygon has all sides the same length. A "regular" rectangle has all sides the same length, therefore it is also a square. An "irregular" rectangle then would be any rectangle that is not a square.
A parallelogram doesn't necessarily have any perpendicular sides, but it can. If it has one single 90-degree angle, then it has four of them, and it's a rectangle or square. A parallelogram without perpendicular sides is a rhomboid or rhombus.
A parallelogram doesn't necessarily have any perpendicular sides, but it can. If it has one single 90-degree angle, then it has four of them, and it's a rectangle.
The sides of a rectangle are not all equal so a rectangle is not a regular polygon. And, as a consequence, any 3-dimensional shape made from rectangles cannot be a regular polyhedron.
A regular triangle, pentagon, heptagon, nonagon, etc ie Any regular polygon with an odd number of sides.