
設兩個正方形的相接點為D,延長AD與圓交於E
則由交點弦性質
AD*DE=BD*DC
得DE = BD*DC/AD = 3sqrt(2)*sqrt(2)/3 = 2
因此圓的直徑為
sqrt(AB^2 + AE^2) = sqrt(3^2 + (3+2)^2) = sqrt(34)

設兩個正方形的相接點為D,延長AD與圓交於E
則由交點弦性質
AD*DE=BD*DC
得DE = BD*DC/AD = 3sqrt(2)*sqrt(2)/3 = 2
因此圓的直徑為
sqrt(AB^2 + AE^2) = sqrt(3^2 + (3+2)^2) = sqrt(34)
•
高!
-萬斤油-
♂
(0 bytes)
()
02/06/2024 postreply
15:59:36
•
漂亮,沒想到交叉弦有這個性質
-monseigneur-
♂
(0 bytes)
()
02/06/2024 postreply
19:30:03
WENXUECITY.COM does not represent or guarantee the truthfCCPA ulness, accuracy, or reliability of any of communications posted by other users.
Copyright ©1998-2025 wenxuecity.com All rights reserved. Privacy Statement & Terms of Use & User Privacy Protection Policy