圖形設定:
[list]
[*]圓 A 為定圓,C 為圓上動點,D 為圓內定點。
[*]圖中紅色虛圓以 C 為圓心、CD 為半徑。
[/list]
幾何性質:
[list=1]
[*]DG 為 D 到兩圓根軸的距離,其為定值。
[*]定值為[math]\frac{d^2-r^2}{2r}[/math],其中 d 為 AD 距離,r 為圓 A 半徑。
[/list]
- Resource Type
-
Activity
- Tags
-
circle
- Target Group (Age)
- 15 – 18
- Language
- Chinese Traditional / 繁體中文
Error
A timeout occurred. Trying to re-save …
Sorry, but the server is not responding. Please wait a few minutes and then try to save again.