Contact us
Choose a category below so we can get back to you as quickly as possible.
n邊形的內角和為:(n-2)*180度,外角和為:360度. 多邊形的外角和為:360度=180度*n-(n-2)*180度 三角形的內角和為:180度,外角和為:360度.
We and our partners use cookies and other technologies to analyze traffic and optimize your experience. View more info and control your cookies settings at any time in our Cookies Policy.