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15 questions
(1)
(2)
(3)
(4)
1組
2組
3組
4組
乙線段
丙線段
丁線段
都一樣長
5條
4條
3條
2條
1個
2個
3個
4個
∠B
∠C
∠D
∠A沒有對角
16個
17個
18個
19個
A線段
B線段
C線段
D線段
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