Contact us
Choose a category below so we can get back to you as quickly as possible.
此圖中有兩個直角三角形,利用畢氏定理可得:CD2=152-122=81,∴CD=9,同理得BD2=132-122=25∴BD=5∴BC=14,此圖還有另一種畫法.即當是此種情況時,BC=9-5=4故選B.
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.