Contact us
Choose a category below so we can get back to you as quickly as possible.
這是運用【畢氏定理】 因為a的平方+b的平方=c平方的開方 例如3 4 5邊長是一個直角三角形
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.