I am using the following code to draw a triangle ABC and the medians AD1, BD2, CD3. A1, B1, C1 are points along each median that are 1/3 away from the angle the median starts from. I use line to draw the ABC triangle and the medians, but Matlab refuses to draw two of the medians. I did check the values by hand and they seem fine. All of the D and [ABC]1 points seem to be right were I want them.
Why aren't all three medians drawn?
A = [1; 0.8384];
B = [1; 1];
C = [0.8384; 1];
D1 = (B + C)/2;
D2 = (A + C)/2;
D3 = (A + B)/2;
A1 = A + (D1 - A)/3;
B1 = B + (D2 - B)/3;
C1 = C + (D3 - C)/3;
line(A,B);
hold on;
line(B,C);
line(C,A);
% Draws medians
line(A,D1);
line(B,D2);
line(C,D3);
plot(D1(1), D1(2), 'kx');
plot(D2(1), D2(2), 'kx');
plot(D3(1), D3(2), 'kx');
plot(A1(1), A1(2), 'kx');
plot(B1(1), B1(2), 'kx');
plot(C1(1), C1(2), 'kx');
hold off;
Picture is:
