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Soma dos ângulos internos de um triângulo
Considera o triângulo.
Clica no ponto C e arrasta-o ao longo da reta
d
.
O que acontece à soma das amplitudes dos ângulos internos?
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Considera o triângulo [RTS].
Seleciona a ferramenta
e faz as medições de ângulos necessários para
justificar
que as retas
r
e
s
são paralelas.
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Qual é o menor lado do triângulo [CBD]?
Justifica
a tua resposta.
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Calcula
a amplitude do ângulo
a
?
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[ctrl+u]
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Superscript
Subscript
Font color
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Justify
Align left
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Align center
• Unordered list
1. Ordered list
Link
[ctrl+shift+2]
Quote
[ctrl+shift+3]
[code]
Code
[ctrl+shift+4]
Insert table
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Insert image
[ctrl+shift+1]
Insert icons of GeoGebra tools
[bbcode]
Text tools
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Information: Soma dos ângulos internos de um triângulo