Find the area of the shaded region. Round your answer to the nearest hundredth.
8
8
3+

The value √10 and √15 are plotted on the number line

If sec theta = 5/3 and the terminal point determined by theta is in quadrant 4, then

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.