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如图1,是我们大家非常熟悉的我国国旗图案,国旗上有五颗美丽的五角星,你知道每一颗五角星的五个角的度数之和是多少吗?
As shown in Figure 1, we are all familiar with the national flag pattern of our country. There are five beautiful five-pointed stars on the national flag. Do you know the sum of the degrees of the five horns of each five-pointed star?