找一點座標,其往所有角之總和為最小
eg (40,48)=280.6
(40,40)=276.6
其中三角形以內心點為最小,但5邊形呢???
更新1:
dist. from ANS.(centre pt.) to A,B,C,D,E (total) is min. valve eg P(40,48)=P to A +P to B+......+P to E=280.6
更新2:
(40,40) wrong HINTS: ANS=(38.XX,XX.XX)