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

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

[KRISHNA VAMSHI GANDURI]

how to give angles for every side(angle representation on plot)

Answer 1

[Walter Roberson]

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

[OLAOYE abass]

what do i need to change to make the circle

[Walter Roberson]

sides = 360

[John BG]

the commands sind and cosd take degrees directly:

sides=6
deg=[0:1:361]
c=cosd(deg)
s=sind(deg)
step=360/sides
plot(c(1:step:361),s(1:step:361));axis equal

[Shyam Agarwal]

How can we change the length of polygon

Answer 2

[Image Analyst]

@Shyam Agarwal, try nsidedpoly():

pgon1 = nsidedpoly(6);
pgon2 = nsidedpoly(6,'Center',[5 0],'SideLength',3);
plot([pgon1 pgon2])
axis equal