MATLAB: How can i plot a hexagon, a triangle, a pentagon, an octagon and a circle.

Question

What are the changes i need to make to this code to get a triangle, a pentagon, an octagon and a circle

% close all the open figure windows 
close all 
% create array containing 361 equally spaced points btw 0 and 2*pi 
degrees = linspace(0, 2*pi, 361); 
% store in the array 'c' cosine of all the values in the array 'degrees' 
c = cos(degrees); 
% store in the array 's' sine of all the values in the array 'degrees' 
s = sin(degrees); 
% calculate appropriate step size for plotting a hexagon 
step = 360/6; 
%plot the polygon 
plot(c(1:step:361), s(1:step:361)) 
%set equal aspect ratio for all the axis 
axis equal

Answer 1

sides = input('har mycket sides?');
step = 360/sides;