Contact us
Choose a category below so we can get back to you as quickly as possible.
設兩直角邊為a b則 (1)a+b=根號5 (2)a^2+b^2=2^2 將1式平方得 a^2+b^2+2ab=5 减去2式得 2ab=1 所以三角形的面積為=ab/2=1/4
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.