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Mathematics
Junior High
Jenny
Jenny

求解，謝謝🙏

如圖,△ABC與AADE為正三角形,且D在BC上。已知BC=20,CD=8,則ACDE的面積為多 少? (A)9、 (A) 24V3 (B) 32√3 (c) 36√√√3 (D) 40√3 B d 20 D D 20²x F 100万 =40x年=1003
國二下數學 三角形的全等性質
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