Find B UD, given the following sets: A = {g, p, r, u, y}
B = {a, f, g, p, r}
C = {b, c, g,r, u}
D = {a, d, e, r, y}

Acircle has a diameter will endpoints of (-2,8) and (6, 4). what is the center of the circle

What is the name used to describe a graph where for some value of x, there exists 2 or more different values of y?

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.