Definition

Examples

• 这个三角形的底边长度是五厘米。
  Zhège sānjiǎoxíng de dǐ biān chángdù shì wǔ límǐ.
  The base of this triangle is five centimeters long.
• 梯形的底边比上边长很多。
  Tīxíng de dǐ biān bǐ shàngbiān cháng hěn duō.
  The base of a trapezoid is much longer than its top side.
• 建筑物的底边必须非常稳固。
  Jiànzhùwù de dǐ biān bìxū fēicháng wěngù.
  The base of a building must be very stable.