clc
clear all
close all

imagem = 255*ones(100,100);
seta = imagem;

for i = 40:50
    seta(60,i)=0;
end

for i = 40:60
    seta(i,40)=0;
end

for i = 40:60
    seta(i,50)=0;
end

for i = 35:39
    seta(40,i)=0;
end

for i = 51:55
    seta(40,i)=0;
end

j = 36;
for i = 39:-1:30
    seta(i,j)=0;
    j = j+1;
end

j = 45;
for i = 30:40
   seta(i,j)=0;
   j = j+1;
end

figure(1)
imshow(seta);
imwrite(seta,'setab.bmp','bmp');

for i = 1:8
    figure(2)
 setaR = imrotate(seta,i*(-45),'nearest','crop');
 imshow(setaR);
end