parallelogram

A quadrilateral whose opposite sides are both parallel and equal in length.

• 🇨🇳有四条边的平面图形，其中两组对边分别平行且长度相等；两组对角分别相等，相邻两角互补。

1. Quadrilateral with parallel sides B1 formal

   A four-sided shape where opposite sides are parallel and equal in length.

   • The teacher drew a parallelogram on the board to explain geometry.
   • A rectangle is a special type of parallelogram.
   • The area of a parallelogram is calculated by multiplying base times height.

   🇨🇳平行四边形

• parallelograms plural form
• parallelograms' possessive plural form
• parallelogram's possessive singular form