tag:blogger.com,1999:blog-3550204829234352390.post1206595150790214844..comments2024-03-27T09:13:48.546+08:00Comments on 研發養成所 ( Bridan's Blog - 4rdp, For R&D Person ): 訓練數學感 152 ─ AD 有多長?Bridanhttp://www.blogger.com/profile/17055047757114667099noreply@blogger.comBlogger4125tag:blogger.com,1999:blog-3550204829234352390.post-24490933805855271422017-10-31T21:45:28.371+08:002017-10-31T21:45:28.371+08:00正解,這題不難,只要慢慢地將已知條件找出,答案自然浮現。正解,這題不難,只要慢慢地將已知條件找出,答案自然浮現。Bridanhttps://www.blogger.com/profile/17055047757114667099noreply@blogger.comtag:blogger.com,1999:blog-3550204829234352390.post-67628912921971110332017-10-31T21:23:55.166+08:002017-10-31T21:23:55.166+08:00把相等的角度一一標出,可發現三角形DAB和三角形CAD AA相似,解方程式2/AD = AD/4 ,...把相等的角度一一標出,可發現三角形DAB和三角形CAD AA相似,解方程式2/AD = AD/4 ,得AD=2sqrt(2)。.https://www.blogger.com/profile/16677804023065232981noreply@blogger.comtag:blogger.com,1999:blog-3550204829234352390.post-24413759264250150302017-10-30T20:16:05.662+08:002017-10-30T20:16:05.662+08:00謝謝老師反應,可能有些人看不到圖,我重新上傳圖檔,希望可以看到,看來直接以 Google 繪圖會看不...謝謝老師反應,可能有些人看不到圖,我重新上傳圖檔,希望可以看到,看來直接以 Google 繪圖會看不見。Bridanhttps://www.blogger.com/profile/17055047757114667099noreply@blogger.comtag:blogger.com,1999:blog-3550204829234352390.post-17201908819019117102017-10-30T15:38:42.133+08:002017-10-30T15:38:42.133+08:00這題沒有圖嗎?這題沒有圖嗎?flyingdustshttps://www.blogger.com/profile/10543166743971149568noreply@blogger.com