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πŸ”’ БмоТСшь Π΄Π°Ρ‚ΡŒ ΠΎΠΏΡ€Π΅Π΄Π΅Π»Π΅Π½ΠΈΠ΅ прямой? Π° Ρ‚ΠΎΡ‡ΠΊΠΈ? #Ρ€Π΅Π°Π»ΡŒΠ½Π°ΡΠΌΠ°Ρ‚Π΅ΠΌΠ°Ρ‚ΠΈΠΊΠ° #ΠΌΠ°Ρ‚Π΅ΠΌΠ°Ρ‚ΠΈΠΊΠ° #гСомСтрия


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Β·Nov 3, 2024

К Ρ‡Π΅ΠΌΡƒ? ΠœΡ‹ ΠΏΡ€ΠΈΠ²Ρ‹ΠΊΠ»ΠΈ, ΠΊΠΎΠ³Π΄Π° ΠΌΡ‹ Π³ΠΎΠ²ΠΎΡ€ΠΈΠΌ ΠΎ Π³Π΅ΠΎΠΌΠ΅Ρ‚Ρ€ΠΈΠΈ, Ρ‡Ρ‚ΠΎ Π΅ΡΡ‚ΡŒ Π½Π΅ΠΊΠΎΠ΅ бСсконСчноС мноТСство Ρ‚ΠΎΡ‡Π΅ΠΊ, ΠΊΠΎΡ‚ΠΎΡ€Ρ‹Π΅ ΠΌΡ‹ Π½Π°Π·Ρ‹Π²Π°Π΅ΠΌ ΠΏΠ»ΠΎΡΠΊΠΎΡΡ‚ΡŒΡŽ. На этой плоскости Ρƒ нас Π΅ΡΡ‚ΡŒ Ρ‚Π°ΠΌ Ρ€Π°Π·Π½Ρ‹Π΅ ΠΎΠ±ΡŠΠ΅ΠΊΡ‚Ρ‹: Ρ‚Π΅ ΠΆΠ΅ самыС Ρ‚ΠΎΡ‡ΠΊΠΈ, прямыС, ΠΎΡ‚Ρ€Π΅Π·ΠΊΠΈ, ΡƒΠ³Π»Ρ‹, Ρ‚Ρ€Π΅ΡƒΠ³ΠΎΠ»ΡŒΠ½ΠΈΠΊΠΈ.

ΠœΠ΅ΠΆΠ΄Ρƒ ΠΏΡ€ΠΎΡ‡ΠΈΠΌ, ΠΏΠΎΠΏΡ€ΠΎΠ±ΡƒΠΉΡ‚Π΅ ΠΎΡ‚Π²Π΅Ρ‚ΠΈΡ‚ΡŒ Π½Π° вопрос: Π° Ρ‡Ρ‚ΠΎ Ρ‚Π°ΠΊΠΎΠ΅, Π½Π°ΠΏΡ€ΠΈΠΌΠ΅Ρ€, прямая? МногиС Π½Π°Ρ‡ΠΈΠ½Π°ΡŽΡ‚ Π³ΠΎΠ²ΠΎΡ€ΠΈΡ‚ΡŒ: «Ну, это такая линия, которая Ρ‚Π°ΠΌ Π½Π΅ ΠΈΠΌΠ΅Π΅Ρ‚ ΠΈΠ·Π³ΠΈΠ±ΠΎΠ² ΠΈΠ»ΠΈ ΠΈΠ·Π»ΠΎΠΌΠΎΠ²Β». Π― Ρ‚ΡƒΡ‚ ΠΆΠ΅ ΠΌΠΎΠ³Ρƒ ΡΠΏΡ€ΠΎΡΠΈΡ‚ΡŒ: Π° Ρ‡Ρ‚ΠΎ Ρ‚Π°ΠΊΠΎΠ΅ линия? А Ρ‡Ρ‚ΠΎ Ρ‚Π°ΠΊΠΎΠ΅ ΠΈΠ·Π³ΠΈΠ±?

И Π²ΠΎΡ‚ Ссли Π²Ρ‹ ΠΏΠΎΠΏΡ€ΠΎΠ±ΡƒΠ΅Ρ‚Π΅ Π΄Π°Ρ‚ΡŒ ΠΏΠΎΠ΄ΠΎΠ±Π½ΠΎΠ΅ Π°ΠΊΠΊΡƒΡ€Π°Ρ‚Π½ΠΎΠ΅ ΠΎΠΏΡ€Π΅Π΄Π΅Π»Π΅Π½ΠΈΠ΅, выяснится, Ρ‡Ρ‚ΠΎ это просто Π½Π΅Π²ΠΎΠ·ΠΌΠΎΠΆΠ½ΠΎ. ΠŸΠΎΡΡ‚ΠΎΠΌΡƒ Π² Π³Π΅ΠΎΠΌΠ΅Ρ‚Ρ€ΠΈΠΈ ΠΎΠ±Ρ‹Ρ‡Π½ΠΎ прямая считаСтся Ρ‚Π°ΠΊ Π½Π°Π·Ρ‹Π²Π°Π΅ΠΌΡ‹ΠΌ Π±Π°Π·ΠΎΠ²Ρ‹ΠΌ понятиСм, Ρ‚ΠΎ Π΅ΡΡ‚ΡŒ Π½Π΅ опрСдСляСмым. Π’ΠΎΡ‡Π½ΠΎ Ρ‚Π°ΠΊ ΠΆΠ΅, ΠΊΠ°ΠΊ Ρ‚ΠΎΡ‡ΠΊΠ°.

Π― ΡΠ»Ρ‹ΡˆΠ°Π» блСстящСС ΠΎΠΏΡ€Π΅Π΄Π΅Π»Π΅Π½ΠΈΠ΅ ΠΎΡ‚ ΠΎΠ΄Π½ΠΎΠ³ΠΎ ΠΈΠ· своих ΡƒΡ‡Π΅Π½ΠΈΠΊΠΎΠ²: Β«Π’ΠΎΡ‡ΠΊΠ° β€” это такая прямая, Ссли Π΅ΠΉ ΠΏΠΎΡΠΌΠΎΡ‚Ρ€Π΅Ρ‚ΡŒ Π² Ρ‚ΠΎΡ€Π΅Ρ†Β».

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