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ExamVWOMathema9csB Listofreferencesandformulas Euclideangeometry Referencestodefini3onsandtheoremsinaproofcanbeusedwithoutfurtherexplana-on: Angles,linesanddistances straightangle,rightangle,opposingangles,correspondingangles,alternateangles,distancepoint toline,triangleinequality Geometricposi>ons perpendicularbisector,bisector,pairofbisectors,centerparallel,circle,parabola Triangles sumofanglesintriangles,externalangleofatriangle; congruenttriangles:ASA,SAA,SAS,SSS,HL(SSR); similartriangles:aa,sas,sss,hl(ssr); perpendicularbisectorsinatriangle,bisectorsinatriangle,al>tudeline,al>tudelinesina triangle,medianline,medianlinesinacircle,isoscelestriangle,equilateraltriangle,righttrangle, Pythagorastheorem,right-angledisosceles,halfequilateral. Quadrangle sumofanglesinaquadrangle,parallellogram,rhombus,rectangle,square Circle,chords,arcs,angles,tangent,quadrilateral chord,arcandchord,normaltoachord,diameter,Thalestheorem,centralangle,circumferen>al angle,theoremofaconstantangle,tangent,theoremchordandtangent,cyclicquadrilateral. Trigonometry $ % $ $ % $ $ % $ $ % $ t#u t−u cos 2 2 sin$t#u%=sin$t %cos $u%#sin $u% cos $t% sin $t%#sin $u%=2 sin sin $t−u%=sin $t% cos$ u%−sin$ u%cos $t% sin $t%−sin $u%=2 sin cos $t #u%=cos$t %cos $u %−sin$u %sin$t % cos $t%#cos$ u%=2 cos cos $t −u%=cos$t %cos $u %#sin$u %sin$t % cos $t%−cos$ u%=−2 sin t−u t#u cos 2 2 % % t#u t−u cos 2 2 % t#u t−u sin 2 2 %