puncte, drepte, plane Flashcards

1
Q

punctul, dreapta si planul

A

nu se definesc, dar pot fi descrise

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2
Q

axioma dreptei

A

prin doua puncte distincte trece o dreapta si numai una

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3
Q

orice dreapta are cel putin

A

doua puncte distincte

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4
Q

axioma paralelelor/lui euclid

A

intr-un plan, printr-un punct exterior unei drepte se poate duce o paralela si numai una la acea dreapta

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5
Q

fiind date trei puncte necoliniare

A

exista un plan si numai unul care sa le contina

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6
Q

orice plan contine

A

cel putin trei puncte necoliniare

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7
Q

daca doua puncte distincte apartin unui plan, atunci

A

dreapta determinata de ele are toate punctele in acel plan

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8
Q

daca doua plane distincte au un punct comun, atunci

A

ele mai au cel putin inca un punct comun

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9
Q

consecinta: daca doua plane distincte au un punct comun, atunci

A

ele au o dreapta comuna

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10
Q

exista patru puncte nesituate in acelasi plan. ele se numesc

A

necoplanare

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