The radius of the circumcircle is also the radius of the polygon. The inside circle is called an incircle and it just touches each side of the polygon at its midpoint. The radius of the incircle is the apothem of the polygon. (Not all polygons have those properties, but triangles and regular polygons do). We can learn a lot about regular polygons by breaking them into triangles like this: Notice that: the base of the triangle is one side of the polygon.
In nature, warm colors represent change as in the changing of the seasons or the eruption of a volcano. Tone down the strong emotions of a warm palette with some soothing cool or neutral colors or by using the lighter side of the warm palette such as pinks, pale yellows and peach.
Nature and Culture: Yellow is sunshine. It is a warm color that, like red, has conflicting symbolism. On the one hand it denotes happiness and joy but on the other hand yellow is the color of cowardice and deceit.Yellow is one of the energetic, warm colors.Because of the high visibility of bright yellow, it is often used for hazard signs and some emergency vehicles. Yellow is cheerful.n the one hand it denotes happiness and joy but on the other hand yellow is the color of cowardice and deceit. Yellow is one of the energetic, warm colors. Because of the high visibility of bright yellow, it is often used for hazard signs and some emergency vehicles. Yellow is cheerful.