Which is an equiangular but not an equilateral parallelogram ?

which is an equilateral but an not an equiangular parallelogram ?

Which is an equilateral and equiangular parallelogram ?

When proving that a quadrilateral is a parallelogram by using slopes you must find

Draw circumcircle of an equilateral traingle.

By using vectors prove that a quadrilateral is a parallelogram if and only if the diagonals bisect each other.

Draw equilateral side of 3.8 cm.

Rewrite each of the following statements in the form ''p if and only if q'' r: If a quadrilateral is equiangular, then it is a rectangle and if a quadrilateral is a rectangle, then it is equiangular.