Homotecia Flashcards

1
Q

Fórmula razón de homotecia (k)

A

K = OA’/OA
OA’ = K • OA
OA = OA’/K

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2
Q

Mayor tamaño, mismo lado de O

A

K>1

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3
Q

Menor tamaño, mismo lado de O

A

0<k<1

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4
Q

No hay figura

A

k = 0

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5
Q

Igual tamaño, misma posición

A

k = 1

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6
Q

Mayor tamaño, lado contrario

A

k<-1

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7
Q

Menor tamaño, lado contrario

A

-1<k<0

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8
Q

Igual tamaño, lado contrario

A

K = -1

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9
Q

Homotecia en el plano cartesiano

A

K • a = (k•x,k•y)

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10
Q

Relación entre perímetro y k

A

K = perímetro fig. homotetica/perímetro fig. original

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11
Q

Relación entre área y k

A

k² = área fig. homotetica/área fig. original

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12
Q

Pasos: en el plano cartesiano con O ≠ (0,0)

A
  1. Trasladar puntos al (0,0) [-O]
  2. Aplicar homotecia
  3. Retornar al orígen [+O]
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