玄冰400风扇安装视频:About maths problems.SOS!!!

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平行四边形中相邻的两角中,写出其中一个角的度数y与另一个角的度数x之间的关系式,并判断y是不是x的函数?

=180°-x (0°<x<180°)
y是x的函数

y=180°-x (0°<x<180°)
y是x的函数

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