Use the replacement set to find the solution set to the inequality c+5<16 {10,11,12}

Two sides of a triangle mesure 20cm and 30cm. what is the measure of the third side

Describe the relationship between the angles of similar triangles and the sides of similar triangles

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.