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.
Warmth(noun) the quality or state of being warm; gentle heat; as, the warmth of the sun; the warmth of the blood; vital warmth. Warmth(noun) a state of lively and excited interest; zeal; ardor; fervor; passion; enthusiasm; earnestness; as, the warmth of love or piety; he replied with much warmth.