関連ワード:
a quadrilateral with opposite sides equal and parallel is called a quadrilateral with opposite sides equal and parallel is called a dash a quadrilateral having opposite sides equal and parallel is called a quadrilateral whose opposite sides are equal and parallel is called a quadrilateral with opposite sides parallel and equal in length is called a quadrilateral with opposite sides parallel and equal in length is called a dash a quadrilateral with one pair of opposite sides parallel and equal is called if a quadrilateral in which opposite sides are not equal and parallel is called a quadrilateral in which two pairs of opposite sides are equal and parallel is called a quadrilateral with two pairs of opposite sides parallel and no equal angles is called a
