题目

Tess still stood hesitating like a swimmer about to make his dive, hardly knowing whether to return or move forward, when a figure came out from the dark door of the tent. It was a tall young man, smoking.     He had an almost black face, though red and smooth. His moustache was black with curled points, though he could not be more than twenty-three or-four. There was all unusual force in his face, and in his daring rolling eyes.     “Well, my beauty, what can I do for you?” said he, coming forward. And seeing that she was quite at a loss: “Never mind me, I am Mr. d’Urbervilles.若一个多边形的内角和为1440°，则这个多边形的边数为________，对角线的条数为________，外角和为________．