网址:http://m.1010jiajiao.com/timu3_id_455296[举报]
________叫做平行四边形,平行四边形的对边________,对角________,邻角________,对角线________.
______叫做平行四边形,平行四边形的对边_______,对角_______,邻角_______,对角线__________.