If you are good and smart with math could you answer this quickly!

Points a, b, and c form a triangle. complete the statements to prove that the sum of the interior angles of triangle abc is 180

Rhombus adef is inscribed into a triangle abc so that they share angle a and the vertex e lies on the side bc . what is the length of the side of the rhombus if ab=c, and ac=b.

Which statements are true about additional information for proving that the triangles are congruent check all that apply