Tikzで作図した図版01
¥begin{tikzpicture}[scale=1.5]¥tikzmath{ ¥b = 3; %CDの長さ ¥c = sqrt(11); %DBの長さ ¥d = 1; %BCの長さ ¥B = acos((¥c^2+¥d^2-¥b^2)/(2*¥c*¥d)); ¥C = acos((¥d^2+¥b^2-¥c^2)/(2*¥d*¥b)); ¥D = acos((¥b^2+¥c^2-¥d^2)/(2*¥b*¥c)); ¥R = ¥b/(2*sin(¥B));}¥coordina