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EAG=AEC=30° (being alternate angles)
BAE=BAG+GAE
100°=BAG+30°
BAG=70°
Again,
DHA=BAG=70° (Being corresponding angle)
so,
DCE=DHA=70° (being corresponding angle)
BAE=BAG+GAE
100°=BAG+30°
BAG=70°
Again,
DHA=BAG=70° (Being corresponding angle)
so,
DCE=DHA=70° (being corresponding angle)
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