A polygon has sides A polygon can have any number of side A polygon can not be curved so a circle is not a polygon Regular Polygon Has congruent sides and angles Has lines of symmetry Irregular Polygon Doesn't have any equal sides or angles Doesn't have any lines of symmetry
If the polygon does not have two interior angles equal to each other, it is asymmetrical, for example a scalene triangle.
An isosceles trapezoid has a pair of parallel sides and a pair of equal base angles
A rectangle is a four sided polygon with four right angles and two pairs of parallel side. [Equal sides is not required since it is implied by parallel and right angles].
A polygon with 14 sides can have at most 14 lines of symmetry. This would occur if the polygon was a regular polygon (i.e. all its sides would have to be equal and all its angles would have to be equal). The lines of symmetry would run between the midpoints of opposite sides and between opposite vertices.
A square A parallelogram
A polygon with sides of equal length and equal angles is termed a regular polygon.
A Regular Polygon.