SAT数学题 How many trapezoidal are needed to form thSAT数学题How many trapezoidal are needed to form the closed ring?

SAT数学题 How many trapezoidal are needed to form thSAT数学题How many trapezoidal are needed to form the closed ring?
SAT数学题 How many trapezoidal are needed to form th
SAT数学题
How many trapezoidal are needed to form the closed ring?

SAT数学题 How many trapezoidal are needed to form thSAT数学题How many trapezoidal are needed to form the closed ring?
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正多边形各内角度数为： （n － 2）×180°÷n代入算就好了还是不会做😥 可以讲清楚点吗

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