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Determine whether the angles in each given pair are coterminal. 744°, -336°

Given a(-12,5) and b(12,29) find the point that divides the line segment ab three-eighths of the way from a to b

In the figure below, ∠dec ≅ ∠dce, ∠b ≅ ∠f, and segment df is congruent to segment bd. point c is the point of intersection between segment ag and segment bd, while point e is the point of intersection between segment ag and segment df. the figure shows a polygon comprised of three triangles, abc, dec, and gfe. prove δabc ≅ δgfe.