Two angles of an isosceles triangle measure 70^ and x^. What is the sum of the three possible values of x?

AMC 8 2009 Problem 19

AMC8 2009 年第 19 题

三角形★★★☆☆

Two angles of an isosceles triangle measure 70^\circ and x^\circ. What is the sum of the three possible values of x?

一个等腰三角形其中两个角的度数是 70°和 x°。那么的 3 个可能值之和是多少？

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