Explain how you determine the type of triangle given the sides: 4, 10, 11.

Based on the figures as marked, /\rqs = —

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.

What is the radius of the cone in the diagram? round your answer to the nearest whole number