; A mandala of triangles with the largest inscribed circle ; inside each triangle. ; nell manda07.nll PIC4 3 | nellsvg 22 22 mm 0.2 1 > manda07.svg L1 = 10; L2 = 10; L3 = 10; d = 2; n1 = 2; n2 = 5; l1 = L1; l2 = L2; l3 = L3; a1 = angle(l3,l1,l2); a2 = angle(l1,l2,l3); a3 = angle(l2,l3,l1); d1 = d/tan(a1/2); d2 = d/tan(a2/2); d3 = d/tan(a3/2); dm = d/sin(a1/2); cm = sin(a2/2)/(cos(a1/2)*sin(a2/2)+sin(a1/2)*cos(a2/2)); a = 2*pi/n2; tri : L(l1) T(pi-a2) L(l2) T(pi-a3) L(l3) T(pi-a1); circ : T(a1/2) M(l1*cm) C(sqrt((-l1+l2+l3)*(l1-l2+l3)*(l1+l2-l3)/(l1+l2+l3))/2) T(-a1/2); PIC2 : S(tri,1) [S(circ,1)] T(a1/2) M(dm) T(-a1/2) A(l1,l1-d1-d2) A(l2,l2-d2-d3) A(l3,l3-d1-d3); PIC3 : [S(PIC2,n1)] T(a) A(l1,L1) A(l2,L2) A(l3,L3); PIC4 : P(11,11) [S(PIC3,n2)] C(L3);