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Quadrato A = l x l P = l x 4

Quadrato A = l x l P = l x 4. Romboide A = b x h P = ( l1 + l2 ) x 2. Cerchio C = d x 3,14 C = r x 6,28 A = r x r x 3,14. Rettangolo A = b x h P = ( b + h ) x 2. Poligono regolare A = ( p x a ) : 2 P = l x numero dei lati. Triangolo equilatero A = ( b x h ) : 2

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Quadrato A = l x l P = l x 4

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  1. Quadrato A = l x l P = l x 4 Romboide A = b x h P = ( l1 + l2 ) x 2 Cerchio C = d x 3,14 C = r x 6,28 A = r x r x 3,14 Rettangolo A = b x h P = ( b + h ) x 2 Poligono regolare A = ( p x a ) : 2 P = l x numero dei lati Triangolo equilatero A = ( b x h ) : 2 P = l x 3 Trapezio A = [ ( B x b ) x h ] : 2 P = ( l1 x 2 ) + l2 Triangolo isoscele A = ( b x h ) : 2 P = ( l1 x 2 ) + l2 Rombo A = ( D x d ) : 2 P = l x 4 Triangolo scaleno A = ( b x h ) : 2 P = l + l + l

  2. Per l’area dei poligoni regolare Apotema = l x numero fisso Lato = apotema x numero fisso Numeri fissi Triangolo = 0,289 Quadrato = 0,5 Pentagono = 0,689 Esagono = 0,866 Ettagono = 1,038 Ottagono = 1,208 Ennagono = 1,374 Decagono = 1,539

  3. Spesa-guadagno-ricavo-perdita • Ricavo – guadagno = spesa • Ricavo – spesa = guadagno • Spesa + guadagno = ricavo • Spesa – ricavo = perdita Peso netto-lordo e tara • Tara + peso netto = peso lordo • Peso lordo – tara = peso netto • Peso lordo – peso netto = tara

  4. Angolo retto = 90° Angolo ottuso = <90° Angolo acuto = >90° Angolo giro= 360° Angolo piatto= 180°

  5. Angolo concavo Angolo convesso = retta = semiretta = segmento

  6. = perpendicolari = incidenti = parallele

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