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
Less Than Hero episode received a Nielsen rating of 5.0/9. Zack Handlen of "The A.V. Club" gave the episode an A, saying: "Seeing Leela, Fry, and Bender work together as a team nearly always makes for something grand, and on the whole, “Less Than Hero” doesn’t disappoint. Its ambitions are modest, and it makes the most of them. Plus, it offers the rare chance to see super-heroes being ridiculous for no other reason than they want to. We could use more of that, really." Less Than Hero "Less Than Hero" is the fourth episode in the fourth season of the American animated television