Discuz Math Forum»Forum › Mathematics › High School › 蝴蝶定理 2道练习题

Return to list New

View 268|Reply 1

[几何] 蝴蝶定理 2道练习题

[Copy link]

3159 Threads	7941 Posts	610K Credits

Credits: 63770

Send PM

hbghlyj Posted 2024-3-3 21:50 |Read mode

Brilliant wiki的词条butterfly-theorem下面的Practice Problems

$\triangle ABC$内切圆I切BC于X，A'是BC中点，求证：A'I平分AX
PT,PB是圆的两条切线，AB是直径，TH$\bot$AB，求证：AP平分TH

怎么用“蝴蝶定理”做？

Reply Edit

3159 Threads	7941 Posts	610K Credits

Credits: 63770

Send PM

Author| hbghlyj Posted 2024-3-3 21:59

1. 出現於 math.stackexchange.com/questions/1850069/prov … center-and-mid-point
但没發現和蝴蝶定理有什麼聯繫

Reply Edit

Return to list New

Mobile version|Discuz Math Forum

2025-5-31 10:55 GMT+8

Powered by Discuz!

× Quick Reply To Top Edit