My task is to create an object class for triangles. I have made a function: triangle<- function(a,b,gamma) { c <- sqrt (a^2+b^2-2*a*b*cos(gamma/180*pi)) beta <- (acos((a^2+c^2-b^2)/(2*a*c)))/pi*180 alfa <- 180-(beta+gamma) T <- (a*b*sin(gamma/180*pi))/2 K <- a+b+c cat ('side of triangle: ',a,b,c,'\n', 'degree of triangle: ',alfa,beta,gamma,'\n', 'perimeter: ',K,'area:', T)} But this is only a simple function without object or class. Can you help me, how I can make an object class for triangles from this? Thanks, Ember Kata -- View this message in context: http://www.nabble.com/object-class-for-triangles-tf3734550.html#a10453594 Sent from the R help mailing list archive at Nabble.com.