∠2 = 180° - (38° + 70°) [Angle Sum Property of Triangle....the 3 angles in a triangle sum up to 180°]
∠2 = 180° - 108°
∠2 = 72°
∠1 = 180° - 72° [linear pair/pair of supplementary angles...angles which form a straight line forms 180°]
∠1 = 108°
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