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Mathematics, 28.07.2021 05:30 dzroy2002

Cho hai đường thẳng a và b song song với nhau. Chứng minh rằng , nếu có đường thẳng c cắt à thì nó cưỡng cắt b

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Cho hai đường thẳng a và b song song với nhau. Chứng minh rằng , nếu có đường thẳng c cắt à thì nó c...
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