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∠1 and ∠2 are vertical angles. if ( mangle 1 = (4x - 28)^circ ) and ( mangle 2 = (2x + 22)^circ ), then find the measure o
Step1: 利用对顶角相等列方程
因为\(\angle1\)和\(\angle2\)是对顶角,根据对顶角相等的性质,可得\(m\angle1 = m\angle2\),即\(4x - 28 = 2x + 22\)。
Step2: 解方程求\(x\)
对\(4x - 28 = 2x + 22\)进行求解,移项可得\(4x - 2x = 22 + 28\),即\(2x = 50\),两边同时除以\(2\),得\(x = \frac{50}{2} = 25\)。
Step3: 求\(\angle1\)(或\(\angle2\))的度数
将\(x = 25\)代入\(m\angle1 = (4x - 28)^{\circ}\),可得\(m\angle1 = 4\times25 - 28 = 100 - 28 = 72^{\circ}\),因为\(m\angle1 = m\angle2\),所以\(m\angle2\)也是\(72^{\circ}\)。
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\(72^{\circ}\)(若求\(\angle1\)或\(\angle2\)的度数,答案均为\(72^{\circ}\))