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how many sides does a regular polygon have if each interior angle measures 168°?
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Step1: 求外角角度
多边形内角与外角互补,已知内角为\(168^{\circ}\),则外角为\(180 - 168=12^{\circ}\)。
Step2: 利用多边形外角和求边数
多边形外角和为\(360^{\circ}\),设边数为\(n\),根据公式\(n=\frac{360}{\text{外角角度}}\),可得\(n = \frac{360}{12}\)。
Step3: 计算边数
\(n=\frac{360}{12}=30\)。
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\(30\)