问题
填空题
n边形的每个外角都等于30°，则n=______，它的内角和是______．
答案
边数n=
=12；360 30
内角和是：（12-2）•180=1800°．
搜题请搜索小程序“爱下问搜题”
n边形的每个外角都等于30°，则n=______，它的内角和是______．
边数n=
=12；360 30
内角和是：（12-2）•180=1800°．
| 阅读理解。 | |||
| |||
| 1. We can infer (推断) that the child in poem 2 is _____. | |||
| A. brave B. honest C. scared D. cold | |||
| 2. The third poem is written for _____. | |||
| A. kids B. adults C. teens D. animals | |||
| 3. The fourth poem is a kind of _____. | |||
| A. Limerick B. Nature poem C. five-line poem D. Haiku | |||
| 4. Poem 2 is mainly about _____. | |||
| A. home B. night C. sleeping D. bed |