Contact us
Choose a category below so we can get back to you as quickly as possible.
延長中線至原來的兩倍,端點設為D 你會得到一個一個角為135度且對邊長為6的新三角形ABD,與原來的三角形面積相等 設另外兩邊為a,b,則 a^2+b^2-2abcos135度=36,且a^2+b^2>=2ab 所以(2+根號2)ab
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.