C
to the++of...?.
:Japan is to the east of China.?.(?)
in the ++of....
:Beijing is in the north of China..(?)
on the++of...?
:The Pacific is on the east of China.?.() C
如图点mn分别在平行四边形abc地的边ab和cd上。is am等于1/2abc嗯,等于1/2cd求
D 解析:对人提问
D
D 解析:单三
4.Thank you.
171819sss随时为你解答.
教育科学大团(土豆团)为你解答.
∵AB = CD ,AD = BC ,BD=BD(公共边),
∴△ABD ≌ △CDB (SSS)
∴∠ADB = ∠CBD (全等三角形的对应角分别相等)
∴AD‖BC (内错角相等,两直线平行)
∴∠1 = ∠2 (两直线平行,内错角相等)