Can some1 plz help me out first answer gets brainlest 5 stars n thanks button
second answer gets 5 stars n thanks button

Can you draw an isosceles triangle with only one 80 degree angle?

What is the simplified expression for 6(2(y+x))

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.