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Egghead · Answer 1 · 2019-04-15T09:35:26+0000

Consider only triangle BDH. Interior angles B and D are given, and "x" is the exterior angle at H. The measure of that exterior angle is the sum of the measures of the opposite interior angles (B, D).

x = ∠B +∠D
x = 46° +33° = 79°

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