if i'm not wrong, i would say that the third angle has (72) because the three sides of all triangles have 180 degrees and if we subtract 180 - 62 - 40 = (72) / but i'm not sure about 40 yd.
the answer is 5/14.
hope this .
can you make your screen more see able?
then i might be able to .
its mainly because the pattern will be infinite and will never end. it will look like a gilder or like a filpbook when set to motion.