老哥们求助小学几何体啊

enVyyy-avatar

enVyyy

问号角吗?应该是20度
Tyokami-avatar

Tyokami

[quote][pid=556736005,28878356,1]Reply[/pid] Post by [uid=42075039]ARCsinx123[/uid] (2021-10-09 20:21):

问号角吗?应该是20度[/quote]咋求出来的...一头雾水
Astronomy-avatar

Astronomy

小学都开始几何了嘛[s:a2:大哭]
我怎么记得是初中新加的课程啊。。还是累死原来奥数的课外班呀
guacamoldy-avatar

guacamoldy

[quote][pid=556736135,28878356,1]Reply[/pid] Post by [uid=6682637]dryadj[/uid] (2021-10-09 20:22):

咋求出来的...一头雾水[/quote]两个两条线的角的和=两个一条线的角的和+40+60
所以两条线的角=一条线的角+40
Tyokami-avatar

Tyokami

[quote][pid=556736413,28878356,1]Reply[/pid] Post by [uid=39062205]tommy5663149[/uid] (2021-10-09 20:23):

小学都开始几何了嘛[s:a2:大哭]
我怎么记得是初中新加的课程啊。。还是累死原来奥数的课外班呀[/quote]熬应该是初中的
enVyyy-avatar

enVyyy

[img]https://img.nga.178.com/attachments/mon_202110/09/-7Q8jrs-6k7wK1aT3cSsg-lc.jpg.medium.jpg[/img]
大概是这样,字有点丑[s:a2:偷吃]
Tyokami-avatar

Tyokami

[quote][pid=556736571,28878356,1]Reply[/pid] Post by [uid=34220382]reSyx[/uid] (2021-10-09 20:24):

两个两条线的角的和=两个一条线的角的和+40+60
所以两条线的角=一条线的角+20[/quote]没听懂啊老哥 我觉得我好菜啊哈哈
AyeJay-avatar

AyeJay

[img]https://img.nga.178.com/attachments/mon_202110/09/-7Q8jrs-2hy6K2gT3cSlc-sg.jpeg[/img]
这样[img]http://img.nga.178.com/attachments/mon_201209/14/-47218_5052bc4cc6331.png[/img][img]http://img.nga.178.com/attachments/mon_201209/14/-47218_5052bc4cc6331.png[/img]
Tyokami-avatar

Tyokami

[quote][pid=556737040,28878356,1]Reply[/pid] Post by [uid=42075039]ARCsinx123[/uid] (2021-10-09 20:27):

[img]https://img.nga.178.com/attachments/mon_202110/09/-7Q8jrs-6k7wK1aT3cSsg-lc.jpg.medium.jpg[/img]
大概是这样,字有点丑[s:a2:偷吃][/quote]第一个等式咋来的啊
ArthurS-avatar

ArthurS

已删除了
enVyyy-avatar

enVyyy

[quote][pid=556737553,28878356,1]Reply[/pid] Post by [uid=6682637]dryadj[/uid] (2021-10-09 20:30):

第一个等式咋来的啊[/quote][img]https://img.nga.178.com/attachments/mon_202110/09/-7Q8jrs-hbacK1sT3cSsg-lc.jpg.medium.jpg[/img]写了个详细一点的