- Lý thuyết Chương 4: Tam giác bằng nhau
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- The real world (trang 124)
- Language focus (trang 122, 123)
- Preview (trang 120)
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- Comprehension (trang 118)
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- The real world (trang 114)
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- Worksheet (trang 148)
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- Comprehension (trang 108)
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- Communication (trang 105)
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- The real world (trang 104)
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- The real world (trang 84)
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