Which of the following is not a regular polygon? On top of that, the answer depends on the options, but the most common correct choice is a rectangle, a rhombus, a parallelogram, a trapezoid, an isosceles triangle, or any shape that fails the two-part test for regularity. A regular polygon must have all sides equal and all interior angles equal. If a shape has only one of those properties, it is not a regular polygon.
What Is a Regular Polygon?
A regular polygon is a closed two-dimensional shape with straight sides in which every side has the same length and every interior angle has the same measure. In simpler terms, a regular polygon is both equilateral and equiangular Surprisingly effective..
For example:
- An equilateral triangle is a regular polygon because all three sides are equal and all three angles measure 60°.
- A square is a regular polygon because all four sides are equal and all four angles measure 90°.
- A regular pentagon has five equal sides and five equal interior angles.
- A regular hexagon has six equal sides and six equal interior angles.
- A regular octagon has eight equal sides and eight equal interior angles
