[解題] 國二下數學 三角形求角度
1.年級：國二下
2.科目：數學
3.章節：第三章 三角形
4.題目：http://tinyurl.com/762ymrp
5.想法：
求題目中問號的那個角度, 答案是30度,
我嘗試用X來解, 可是發現根本無法求出
小朋友拿來問我, 他說他們老師說這題有十幾種解法
可否請教各位大大有哪幾種解法, 謝謝
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04/10 00:40, , 1F
04/10 00:40, 1F
→
04/10 00:50, , 2F
04/10 00:50, 2F
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04/10 08:55, , 3F
04/10 08:55, 3F
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04/10 08:59, , 4F
04/10 08:59, 4F
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04/10 09:37, , 5F
04/10 09:37, 5F
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04/10 09:56, , 6F
04/10 09:56, 6F
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04/10 11:29, , 7F
04/10 11:29, 7F
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04/10 13:23, , 8F
04/10 13:23, 8F
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04/10 15:03, , 9F
04/10 15:03, 9F
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04/10 21:01, , 10F
04/10 21:01, 10F
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04/10 21:02, , 11F
04/10 21:02, 11F
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04/17 17:01, , 12F
04/17 17:01, 12F
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04/17 17:03, , 13F
04/17 17:03, 13F