Pravokotni Koordinatni Sestem Flashcards

1
Q

Razdalja med tockami?

A

d(A,B)=✔️(x2-x1)2 + (y2-y1)2

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2
Q

Kdaj so tocke A,B,C kolinearne?

A

Takrat ko je ploscina trikotnika ABC enaka 0

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3
Q

+/- orientiran trikotnik?

A

+ ce si oglisca sledijo v nasprotni smeri urinega kazalca

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4
Q

Ploscina trikotnika z ogljisci A,B,C?

A

|x2-x1 y2-y1|
S= 1/2 • o |x3-x1 y3-y1|

=1/2• o ((x2-x1)(y3-y1)-(x3-x1)(y2-y1))

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