In the diagram shown, if m<AGF  =  64°, m<CGE  =  84°, then m<DGB   =   32°
From the figure shown:
m<AGF  =  64° (Given)
m<CGE  =  84° (Given)
m<AGF Â = Â m<BGE Â (Vertically opposite angles are equal)
m<AGF  =  m<BGE  =  64°
m<CGE  +  m<BGE  +  m<DGB  =  180° (Sum of angles on a straight line)
84 Â + Â 64 Â + Â m<DGB Â = Â 180
148 Â + Â m<DGB Â Â = Â 180
m<DGB Â Â = Â 180 Â - Â 148
m<DGB   =   32°
Therefore, in the diagram shown, if m<AGF  =  64°, m<CGE  =  84°, then m<DGB   =   32°
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