量度直線圖形的周界時，要注意:(陳老師給你們的其中一個錦囊) by Chan Man ching https://padlet.com/chanmc224/8u0jdkbzom4h en-us 2017-11-20 09:27:49 UTC 2017-11-20 09:33:24 UTC hello@padlet.com 計算加法時要小心 chanmc224 https://padlet.com/chanmc224/8u0jdkbzom4h/wish/208626675 2017-11-20 09:28:36 UTC https://padlet.com/chanmc224/8u0jdkbzom4h/wish/208626675