geometria Flashcards

1
Q

propriedade do trapezio isosceles

A

os angulos das bases sao iguais

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2
Q

propriedade do angulo do paralelogramo

A

angulos de lados opostos sao iguais

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3
Q

propriedade da diagonal de um paralelogramo

A

as diagonais se interceptam no ponto medio

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4
Q

propriedade diagonal losango

A

faz bissetriz

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5
Q

qual a formula pra saber o angulo do relogio?

A

60H - 11 min|
—————— |
2

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6
Q

o que é flecha de uma circunferência?

A

é o segmento de reta que une o ponto medio da corda ao ponto medio do arco

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7
Q

qual é a distancia entre os centros de 2 circunferências tangentes externamente

A

a soma dos raios

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8
Q

qual a distancia dos centros de duas circunferências tangentes internamente

A

subtracao dos raios

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9
Q

como saber a medida do arco

A

comprimento da abertura/ R

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10
Q

qual a area do setor (em função do ângulo)

A

angulo x R^2/ 2

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11
Q

segmento circular formula

A

angulo x R^2 - R^ 2 x sen angulo
—————————————-
2

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12
Q

coroa circular formula

A

pi( R^2 - r^2)

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