GHIJKL GHIJKL\,GHIJKL is a hexagon.
Angle LGHLGHLGH = Angle GHIGHIGHI = Angle KLIKLIKLI = Angle HIJHIJHIJ. Angle IJKIJKIJK = Angle JKL=140∘JKL = 140^\circJKL=140∘.
Work out the size of angle LGHLGHLGH. You must show all your working.