Eines I TraçAts
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EINES I TRAÇATS Fonaments del dibuix tècnic
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Eines i principals traçats de línies, angles i teorema de Tales.
Transcript of Eines I TraçAts
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EINES I TRAÇATS
Fonaments del dibuix tècnic
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ESTRIS DE DIBUIX TÈCNIC
LLAPIS I RÒTRINGS ESCAIRES
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COMPÀS ACCESSORIS COMPÀS
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REGLE GRADUAT EL CENTÍMETRE
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TRAÇATS
PARAL.LELES PERPENDICULARS 90º
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SEGMENTS
LÍNIA : SEGMENT AB = PORCIÓ DE LÍNIA :
A B
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DIVISIÓ D’UN SEGMENT EN 2 PARTS IGUALS
A B = =
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DIVISIÓ D’UN SEGMENT EN PARTS IGUALS
• TEOREMA DE TALES :
1 2 3 4 5 6 7 A B 1 2 3 4 5 6 7
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DIVISIÓ D’UN SEGMENT EN PARTS PROPORCIONALS
• DONATS ELS SEGMENTS : A B C D E F
B-C D-E F A
B - C
D – E F
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ANGLES
• BISECTRIU D’UN ANGLE :
= =
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SUMA D’ANGLES
• DONATS ELS ANGLES : α β
α β ANGLE RESULTAT
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RESTA D’ANGLES• DONATS ELS ANGLES : α β
β ANGLE RESULTAT α