Concave polygon Concave polygon A simple polygon that is not convex is called concave, non-convex or reentrant. A concave polygon will always have at least one reflex interior angle—that is, an angle with a measure that is between 180 degrees and 360 degrees exclusive. Some lines containing interior points of a concave polygon intersect its boundary at more than two points. Some diagonals of a concave polygon lie partly or wholly outside the polygon. Some sidelines of a concave polygon fail to divide the plane into two half-planes one of which entirely contains the polygon. None of these three statements holds for
360 Degrees of Power 360 Degrees of Power 360 Degrees of Power is the only album by female emcee, author, and activist Sister Souljah, which was released in 1992 on Epic/SME Records. The album was met with criticism, not only for its performances—most of which were angry spoken-word tirades that Souljah screamed rather than traditional hip-hop rhymes—but also because of its controversial lyrics. The two singles and music videos, "The Hate that Hate Produced" and "The Final Solution: Slavery's Back in Effect," were banned by MTV because of their inflammatory language and imagery. The album reached #72 on the Top R&B/Hip Hop album chart,