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小明在计算一个多边形的内角和时求得的内角和为2220度

2025-03-15 04:32:08

推荐回答（2个）

回答1：

由题可得，该少掉的内角0°<内角<180°。有内角和为180的倍数及该内角和度数的条件可得该内角为120°
那可知原内角和为2220+120=2340°
由多边形的内角和的公式：(n-2）×180
得：2340÷180+2=15

回答2：

内角0°<内角<180° 2220+120=2340° （n-2）×180
所以：2340÷180+2=15

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