Recta Flashcards

1
Q

Distancia entre dos puntos

A

d=』(x2-x1)²+(y2-y1)²

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2
Q

Punto medio

A

x=x1+x2/2 y=y1+y2/2

(x,y)

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3
Q

Pendiente (inclinación)

A

m=y2-y1/x2-x1

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4
Q

Pendiente paralela y perpendicular

A

Paralelo: m1=m2
Perpendicular: m1*m2=-1

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5
Q

Distancia entre un punto y una recta

A

d=|Ax1+By1+C|/』A²+B²

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6
Q

Ecuación de la recta general

A

ax+by+c=0
Igualada a 0

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7
Q

Ecuación de la recta ordinaria/pendiente-ordenada

A

y=mx+b

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8
Q

Averiguar ecuación de la recta a partir de un punto y la pendiente

A

y-y1=m(x-x1)

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9
Q

Averiguar ecuación de la recta a partir de dos puntos

A

y-y1=y2-y1/x2-x1 (x2-x1)

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10
Q

Averiguar ecuación de la recta a partir de la pendiente y ordenada

A

y=mx+b

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11
Q

Mediana

A

Recta que une un vértice con el punto medio del lado opuesto

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12
Q

Mediatriz

A

Recta perpendicular que pasa por el punto medio de un lado

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13
Q

Altura

A

Recta perpendicular trazada desde un vértice al lado opuesto

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14
Q

Baricentro

A

Punto donde se unen las medianas

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15
Q

Circuncentro

A

Punto donde se unen las mediatrices

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16
Q

Ortocentro

A

Punto donde se unen las alturas