Determine the graph that has the following properties:
domain: (- infinity, 4) , [4, infinity)
range: [0, infinity)
axis of symmetry: x=4

Which shows the image of rectangle abcd after the rotation (x, y) → (–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.

Math it's appreciated. (picture provided)