Mat utfrs 17. teorema de tales
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1 Aula 17 – 29/08/2011 Prof. Paulo Berndt
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Transcript of Mat utfrs 17. teorema de tales
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Aula 17 – 29/08/2011 Prof. Paulo Berndt
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Teorema de Tales
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Teorema de Tales
Um feixe de paralelas determina, sobre duas transversais quaisquer, segmentos proporcionais correspondentes.
A
B
D
C
E
F
r
s
t
ABDE
BCEF
ACDF
= =
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Nas figuras, sabe-se que r // s // t. Calcule x, sabendo que as medidas são dadas em cm.
x
8
9
6
r
s
t
Exemplo:
4
12
xr
s
t
24
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Sendo r // s // t, calcule x.
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Sendo r // v // t, calcule x.
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Na figura, é paralelo a . Calcule o valor de NM BC AB
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Sendo r // s // t, calcule x e y.