Mathematische Formelsammlung

6.2 Viereck Trapez Deltoid A =   (a + c) · h _ 2 = m· h A =   e · f _ 2 u = a + b + c + d u = 2a + 2b Parallelogramm Rhombus (Raute) A = a · h a = b · h b A = a · h =   e · f _ 2 u = 2a + 2b u = 4a Rechteck Quadrat A = a · b A = a 2 =   d 2 _ 2 u = 2a + 2b u = 4a d = a 9 _ 2 6.3 Kreis, Kreisteile, Ellipse α in Grad Kreis Ellipse A = r 2 π =   d 2 π _ 4 A = ab π u = 2r π = d π π = 3,14159… Kreissektor Kreisbogen A =   br _ 2 =   r 2 πα _ 360 b =   2r πα _ 360 =   r πα _  180 a h c h - 2 m e f a b a b h b h a a a f e h a b a a d d r b a b r α b r α Ebene Figuren 10 Nur zu Prüfzwecken – Eigentum des Verlags öbv