Zig

 Did I say no triangles?

 Do yours measure 4 1/2"?

 Remember

because we have cut at an angle 

you may need to off set the pieces a bit to account for the angle.

Next

lay out the rows.

This is done "on point"

 First row

then a second

and a third row.....

and then they are joined in diagonal strips.

I am making 2 halves and then deciding how BIG to go.

This size has 73 x 4 1/2" blocks

so that means.....

cut 5 x 4 1/2 strips from each fabric and then

cut  4 1/2" x 5" pieces (37 from each fabric)

BUT

I am going BIGGER!

Back to the calculator.