# Doubt about plotting in Matlab and finding intersect points

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I have 2 doubts,
Doubt #1
In one hand, I am trying to plot a circle as well as some lines. The problem here is that if I plot the circle alone it draws fine, but if I plot the circle with the lines, the circle deforms to an oval (as I show you in the images attached).  The code I have written for that is that one:
%%% DRAW THE CIRCUNFERENCE
hold on
%x and y are the coordinates of the center of the circle
%r is the radius of the circle
%0.01 is the angle step, bigger values will draw the circle faster but
%you might notice imperfections (not very smooth)
ang=0:0.01:2*pi();
xp=5*cos(ang);
yp=5*sin(ang);
plot(0+xp,0+yp);
%DRAW LINES AT DIFFERENT ANGLE
hold on;
x=linspace(0,100)';
line0=[0*x];
line1=[0.1763*x];
line2=[0.3639*x];
line3=[0.5773*x];
line4=[0.8391*x];
line5=[1.1917*x];
line6=[1.7320*x];
line7=[2.7475*x];
line8=[5.6713*x];
plot(line0);
plot(line1);
plot(line2);
plot(line3);
plot(line4);
plot(line5);
plot(line6);
plot(line7);
plot(line8);
#Doubt #2
In the other hand, I would like to find the intersection points between those lines and the circle.

Stephen Cobeldick on 21 Oct 2020
Edited: Stephen Cobeldick on 21 Oct 2020
"...if I plot the circle with the lines, the circle deforms to an oval"
axis('equal')

Ameer Hamza on 21 Oct 2020
ErikJon Pérez Mardaras on 21 Oct 2020
Thanks to both! Cheburashka and Ameer Hamza
Stephen Cobeldick on 21 Oct 2020
@Ameer Hamza: thank you!

R2019b

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