a = (1, 0)
b = (0, 1)
A = Corner(pic1, 1)
A': ((x(a) * x(A)) + (x(b) * y(A)), (y(a) * x(A)) + (y(b) * y(A)))
B = Corner(pic1, 2)
C = Corner(pic1, 4)
P, d, a_1, c = Polygon(A, B, C)
B': ((x(a) * x(B)) + (x(b) * y(B)), (y(a) * x(B)) + (y(b) * y(B)))
C': ((x(a) * x(C)) + (x(b) * y(C)), (y(a) * x(C)) + (y(b) * y(C)))
Q, c', a', b' = Polygon(A', B', C')
T1: " M = 
\left( \begin{array}{cc}" + (LaTeX[x(a)]) + " & " + (LaTeX[x(b)]) + "\\" + (LaTeX[y(a)]) + " & " + (LaTeX[y(b)]) + "
\end{array} \right)"