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2n=180°-2m+(180°-112°)
2n+2m=248°... m+n=124°
X=180°-(m+n)=180°-124°
X=56°
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x+y+z=180>
x=180-y-z ........(1)
(180-2y)+(180-2z)=112 (90-y)+(90-z)=56 180-y-z=56.........(2)
بالمقارنة1مع2
x=56°🍀❤🌻🌹🌷🌼🌼🌸
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