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Junior High
Mathematics
想問這個40度怎麼看出來的
Mathematics
Junior High
about 2 hoursago
𝓐𝓶𝓪𝓷𝓭𝓪
想問這個40度怎麼看出來的
D 22 如圖(古),信惠以4點為旋轉中心,將正方形 | ABCD 順時針旋轉至正方形 AB'C'D',且CD 早與B'C'相交於E點。若正方形ABCD 的邊長 為2,<B'AE=25°,則C點旋轉至C'點所行 經的路徑長為何? 4 (A) T (B) 9 Bπ 4/2 C E 'B'' 75730 B. ·D A C 360=42 40 9 TV A D' (A) 圖(古) (C) T 9 5/2 (D) T 9
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