Contact us
Choose a category below so we can get back to you as quickly as possible.
因為 三角形ABC為等腰三角形,且角A為36度 所以 這個三角形是黃金三角形 所以 BC/AB =(sqrt(5)-1)/2 平分角B就可以證出來了 三角形ABC相似於三角形BCD
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.