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Posted by fangsha on December 28, 2024 at 4:47am 0 Comments 0 Likes
如果您需要加總欄或列中的數字,使用Excel 為您計算吧. 選取您要加總的數位旁的單元格,選取[常用] 索引標籤上的[自動求和],按Enter,即可完成.
30–60–90度三角形是平面几何中唯一一个角度呈等差数列的直角三角形.聖誕交換禮物
S-9-9 三角形的內心:內心的意義與內切圓,三角形的內心到三角形的三邊等距,三角形的面積=周長×內切圓半徑÷2,直角三角形的內切圓半徑=(…
Posted by Frances on December 28, 2024 at 4:47am 0 Comments 0 Likes
Posted by Debra on December 28, 2024 at 4:47am 0 Comments 0 Likes
Posted by Raymond on December 28, 2024 at 4:47am 0 Comments 0 Likes
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