you have 1.5 yards (54 inches) of decorative fringe for the bottom edge of a circular lampshade. What is the diameter of the largest shade you can decorate

Solve for x, y, and z. show all steps.

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.

Ineed to know the answer to this algebra question.