Euler line
Số nhiều: Euler lines
Từ liên quan
centroidorthocentercircumcentertrianglegeometryEuclideancollinearaltitudemedianvertexangle bisectorincentercircumcircleincircleradiusdiameterhypotenuselegangledegreeradianplanepointlinesegmentvectorcoordinateaxisoriginslopeinterceptcongruencesimilaritytheoremproofaxiompostulatelemmacorollarytrigonometrysinecosinetangentsecantcosecantcotangentareaperimeterbisectorcentroidalorthogonalconcentriceccentricitypolygonequilateralisoscelesscaleneright triangleobtuseacute