17.5 %. Simplify 5700000000 to 5.7 billion. 1 billion/5.7 billion = .175. Multiply by 100 for percent= 17.5%
So.. let's say ∡AGB and ∡BGC are say "a" units wide, and ∡CGD and ∡DGE are "b" units wide
notice the picture below
all angles added up together, will make up just a flat line, or 180°
now, notice in the picture, the ∡BGD is really just " a + b " wide, notice the green angle in the picture of ∡BGD, well, we know what a + b is
L and M are parallel, just like P and N because their angles with other segments are the same
Michael smith and Kary B. Mullís