Fakta Tentang Regular Polygon dan Polyhedron

ng legend peSumber : http://lifesmith.com/mathfun.htmlfollowi

s = Panjang sisi	A = Luas	d = Diagonal
R = Jari-jari lingkaran luar	V = Volume	a = Panjang sisi
r = Jari-jari lingkaran dalam	h = Tinggi	S = Luas permukaan

Segitiga	A = ((s^2)*sqrt(3)) / 4	Bidangemapt	V = (1/12) * sqrt(2) * a^3
	R = (1/3) * s * sqrt(3)		S = a^3 * sqrt(3)
	r = (1/6) * s * sqrt(3)		R = (1/4) * a * sqrt(6)
	Luas segitiga sama kaki = (c/4)(sqrt(4a^2 - c^2) dengan (c panjang alas, a panjang kaki)		r = (1/12) * a * sqrt(6)
Persegi	A = s^2	Kubus	V = a^3
	R = (1/2) * s * sqrt(2)		S = 6 * a^2
	r = (1/2) * s		R = (1/2) * a * sqrt(3)
			r = (1/2) * a
Segilima	A = (s^2 / 4) ( sqrt( 25 + 10 * sqrt(5) ) )	Octahedron	V = (1/3) * a^3 * sqrt(2)
	R = (1/10) * s * sqrt (50 + 10 * sqrt(5) )		S = 2 * a^2 * sqrt(3)
	r = (1/10) * s * sqrt (25 + 10 * sqrt(5) )		R = (1/2) * a * sqrt(2)
			r = (1/6) * a * sqrt(6)
Segienam	A = (3/2) * s^2 * sqrt(3)	Dodecahedron	V = (1/4) * a^3 * (15 + 7 * sqrt(5) )
	R = s		S = 3 * a^2 * sqrt(25 + 10 * sqrt(5) )
	r = (1/2) * s * sqrt(3)		R = (1/4) * a * ( sqrt(3) + sqrt(15) )
			r = (1/4) * a * sqrt( (50 + 22 * sqrt(5)) / 5 )
Segidelapan	A = 2 * s^2 * (1 + sqrt(2) )	Icosahedron	V = (5/12) * a^3 * (3 + sqrt (5) )
	R = (1/2) * a * sqrt( 4 + 2 * sqrt(2) )		S = 5 * a^2 * sqrt(3)
	r = (1/2) * a * (1 + sqrt(2) )		R = (1/4) * a * sqrt(10 + 2 * sqrt(5) )
			r = (1/2) * a * sqrt( (7 + 3 * sqrt (5)) / 6 )
Segisembilan	A = (5/2) * s^2 * sqrt (5 + 2 * sqrt(5))	Bola	V = (4/3) * pi * a^3
	R = (1/2) * a * (1 + sqrt(5) )		S = 4 * pi * a^2
	r = (1/2) * a * sqrt( 5 + 2 * sqrt(5) )
Kerucut	S = (pi) * r * sqrt(r^2 + h^2)	Jari-jari lingkaran luar segitiga	R = sqrt[s * (s - a) * (s - b) * (s - c)] / s where s = (1/2) * (a + b + c)