GHIJKL GHIJKL\,GHIJKL is a hexagon.
Angles G,H,K, G, H, K,\,G,H,K, and L L\,L have sizes 135∘135^\circ135∘, 125∘125^\circ125∘, 120∘120^\circ120∘, and 140∘ 140^\circ\,140∘ respectively.
Angle HIJ=3×HIJ = 3 \timesHIJ=3× Angle IJK IJK\,IJK
Work out the size of angle HIJHIJHIJ.
