Cho hình vẽ ở bên. Khi đó mệnh đề đúng là:
A.\(\widehat {AMC} = \)\(\frac{1}{2}\) ( sđ\(AnB + \) sđ\(CpD\) )
B.\(\widehat {AMC} = \) \(\frac{1}{2}\) ( sđ\(AqC + \) sđ\(DmB\) )
C.\(\widehat {AMC} = \)\(\frac{1}{2}\) ( sđ\(AnB - \) sđ\(CpD\) )
D.\(\widehat {AMC} = \)\(\frac{1}{2}\) ( sđ\(AqC - \) sđ\(DmB\))
A.\(\widehat {AMC} = \)\(\frac{1}{2}\) ( sđ\(AnB + \) sđ\(CpD\) )
B.\(\widehat {AMC} = \) \(\frac{1}{2}\) ( sđ\(AqC + \) sđ\(DmB\) )
C.\(\widehat {AMC} = \)\(\frac{1}{2}\) ( sđ\(AnB - \) sđ\(CpD\) )
D.\(\widehat {AMC} = \)\(\frac{1}{2}\) ( sđ\(AqC - \) sđ\(DmB\))
Loga
Hóa Học lớp 12
