Quod Erat Demonstrandum

2016/02/15

某 front view

Filed under: Junior Form Mathematics,mathematics — johnmayhk @ 2:38 下午

偶查草稿,見以下 2014-09-14 同工 send 來的圖,問:左上一題的 front view 為何?(點擊下圖可放大)

IMG-20140914-WA0002

這是初中數學,同學試試,解答如下:

20140914_170445-1

差不多一年半後的今天,我有時間畫埋個 3d object 出來,探究一下:

http://tube.geogebra.org/m/2660657

johnmayhk-2014-09-14

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