[問題] 中學 資優生 邏輯推理

[nice11 (堅強)]

請問下列兩個邏輯問題的翻譯及解答(哪一個才成立?)
謝謝

Compare the following arguments:

1. All squares are polygons.
   All triangles are polygons.
   Therefore, some triangles are squares.

2. All polygons have sides.
   All squares are polygons.
   Therefore, all squares have sides.

謝謝

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