1/2(12 + 4) * 12 (ABCE)
- 1/2(4 * 3) (CFD)
- 1/2(12*9) (AFB)
= 36
1/2(12 + 4) * 12 (ABCE)
- 1/2(4 * 3) (CFD)
- 1/2(12*9) (AFB)
= 36
• 答案對,但你確定求兩塊非陰影三角形麵積時沒有用到初中的相似三角形? -萬斤油- ♂ (0 bytes) () 03/29/2022 postreply 06:12:40
• 確實用到了相似三角形的概念。我也不記得小學與初中的分界綫 -布衣之才- ♂ (0 bytes) () 03/30/2022 postreply 21:23:54
• CFD應該是CFE -yma16- ♂ (0 bytes) () 03/31/2022 postreply 10:05:14
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