檢視弦切角的原始碼

{| class="wikitable" align="right"
|-
| style="background: #FF2400" align= center|  '''<big>弦切角</big>'''
|-
|<center><img src=https://gimg2.baidu.com/image_search/src=http%3A%2F%2Fwww.51wendang.com%2Fpic%2F1e16d0b25486f9ce8a8d526c%2F4-810-jpg_6-1080-0-0-1080.jpg&refer=http%3A%2F%2Fwww.51wendang.com&app=2002&size=f9999,10000&q=a80&n=0&g=0n&fmt=auto?sec=1653808668&t=7457e8ef989b180fccdf3498fc2ed7c5 width="300"></center>
<small>[https://image.baidu.com/search/detail?ct=503316480&z=0&ipn=d&word=%E5%BC%A6%E5%88%87%E8%A7%92&step_word=&hs=0&pn=9&spn=0&di=7077213605308923905&pi=0&rn=1&tn=baiduimagedetail&is=0%2C0&istype=0&ie=utf-8&oe=utf-8&in=&cl=2&lm=-1&st=undefined&cs=1039239217%2C2243469027&os=2300845600%2C2118607555&simid=3343340409%2C121268814&adpicid=0&lpn=0&ln=597&fr=&fmq=1651216676394_R&fm=&ic=undefined&s=undefined&hd=undefined&latest=undefined&copyright=undefined&se=&sme=&tab=0&width=undefined&height=undefined&face=undefined&ist=&jit=&cg=&bdtype=0&oriquery=&objurl=https%3A%2F%2Fgimg2.baidu.com%2Fimage_search%2Fsrc%3Dhttp%3A%2F%2Fwww.51wendang.com%2Fpic%2F1e16d0b25486f9ce8a8d526c%2F4-810-jpg_6-1080-0-0-1080.jpg%26refer%3Dhttp%3A%2F%2Fwww.51wendang.com%26app%3D2002%26size%3Df9999%2C10000%26q%3Da80%26n%3D0%26g%3D0n%26fmt%3Dauto%3Fsec%3D1653808668%26t%3D7457e8ef989b180fccdf3498fc2ed7c5&fromurl=ippr_z2C%24qAzdH3FAzdH3Fooo_z%26e3Bc8ojg1wg2_z%26e3Bv54AzdH3F15vAzdH3F8j8m1akdc9bmulvjbwb1cdmvAzdH3F9&gsm=a&rpstart=0&rpnum=0&islist=&querylist=&nojc=undefined&dyTabStr=MCwyLDEsMyw2LDQsNSw3LDgsOQ%3D%3D 来自 呢图网 的图片]</small>
|-
| style="background: #FF2400" align= center|  '''<big></big>'''

|-

| align= light|

中文名称；弦切角

外文名称；angle of osculation

大小等于；它所夹的弧所对的圆周角

特点；顶点在圆上
|}

顶点在圆上，一边和圆相交，另一边和圆相切的角叫做'''弦切角'''。其大小等于它所夹的弧所对的[[圆周角]]。<ref>[https://wenku.baidu.com/view/bf214632ee06eff9aef807e9.html 弦切角定理],百度 , 2020年8月27</ref>