一个多边形的内角和为720°，那么这个多边形的对角线共有(　　)

题干

A：6条

B：7条

C：8条

D：9条

上一题下一题 0.0难度选择题更新时间:2014-06-19 05:35:01

根据短文理解，选择正确答案。

Hours

Monday – Thursday: 10:00 am – 5:00 pm

Friday: 10:00 am – 8:00 pm

Saturday: 10:00 am – 5:00 pm

Sunday: 11:00 am – 5:00 pm

Closed on Thanksgiving Day and Christmas Day.

The Museum Shop is open during regular museum hours.

The Museum Library

Monday –Friday: 10:00 am – 5:00 pm

The Skyliner Restaurant

Monday - Saturday: during regular museum hours

Sunday: 11:30 am – 5:00 pm

Admission

Adults:$7.00

The aged and students with ID: $6.00

Wonderful Museum offers a 50% discount to groups of 20 or more.

小学学科试题库

初中学科试题库

高中学科试题库