Mrs. Williams has a recipe for crispy rice treats that serves 30 people. The recipe is 2 cups melted butter 24 oz marshmallows and 13 cups rice crispy cereal. She only has 16 oz of marshmallows. What amounts of other ingredients should she use

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.