KROG Flashcards

1
Q

polmer, premer

A

r = d/2
d

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2
Q

premice na krog

A

sekanta
mimobežnica
tangenta (dotikanta)
tetiva (začne in konča se na krožnici)

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3
Q

ubodni kot

A

-vrh ima na krožnici
-kraka potekata skozi točki na krožnici
+ določata lok

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4
Q

središčni kot

A

-vrh ima v središču
-kraka potekata skozi točki na krožnici
+ določata lok

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5
Q

središčni in ubodni kot nad istim lokom

A

beta = 2 * alfa

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6
Q

ubodna kota nad kompleksnima kotoma

A

alfa + beta = 180°

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7
Q

ubodni koti nad istim lokom

A

vsi koti so enako veliki

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8
Q

kot v polkrogu (ubodni kot nad premerom)

A

pravi kot = kot, ki ima vrh na križnici, kraka pa potekata skozi krajišči premera te krožnice

talesov izrek
alfa = 2 * beta

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