We call a polygon star-shaped if there exists at least one point for which the entire polygon is "visible" from that point. ... <看更多>

A polygon P is star-shaped if there exists a point p in the interior of P such that any other point (vertex) on the boundary is visible to p. ... <看更多>

Learn to recognise the star polygon shapes with this fun educational video with colourful animated star shapes ! Perfect for kids who know ... ... <看更多>

A polygon is star-shaped if one point inside the polygon can see every other point on the polygon. The region containing those points is called the kernel. ... <看更多>

If r=1/2, then the derived polygons are called midpoint polygons and tend to a shape with opposite sides parallel and equal in length. Furthermore, alternate ... ... <看更多>