The list gives average temperatures for Greenland for each month of the year, from January through December. 12°, -3°, 8°, -1°, 4° Order the numbers from greatest to least.
What is the difference between the given high and low temperatures for Greenland?

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.