Question

Derive a condition to find the relation between number of sides, number of line symmetry and order of rotational symmetry in regular polygon​

Answer 1

• The term "parallelogram" is derived from the Greek word "parallelogramma" (which means fenced by parallel lines).

• Parallelograms are quadrilaterals with four sides.

• The area is bisected by Any of the line passing through the centre of a parallelogram.

• A parallelogram has to its name 2 sets of parallel sides (which never meet) and four edges.

Opposite sides of parallelogram are equally long (they are same in length) and are parallel to each other.

• Squares, Rectangles, and rhombuses are all parallelograms.

• A trapezoid is not a parallelogram. A trapezoid has exactly two parallel sides whereas a parallelogram has two pairs of parallel sides.

• A trapezoid is a special kind of parallelogram with at least one pair of parallel sides but neither has a reflectional symmetry nor a rotational symmetry. Therefore you cannot make observations based upon symmetry.

• An isosceles trapezoid is a parallelogram for which all four sides are same (are equally long).

• An isosceles trapezoid that has only one pair of parallel sides has reflectional symmetry but no rotational symmetry.