In the figure14-23 MON is a straight line,If the angles a,β and γ satisfy β：α=2：1,and γ：β=3：1,then the angle β=_______.

In the figure14-23 MON is a straight line,If the angles a,β and γ satisfy β：α=2：1,and γ：β=3：1,then the angle β=_______. I'm in the mood I‘m not in the I in the park ,还是I'm in the park I’m in the mood for French i'm singing in the sky歌词 I' m in the classroom的过去式 there is____m in the word mother I'm interested in traveling around the I'm go in the fuck home The Trouble I'm In 歌词 I＇m cooking in the kitchen I'm In love Joho The Whistler The Trouble I'm In 歌词 I M Running (In The City) 歌词 I'm the awe in awesome they watched a m----- in the cinema yes,l'm going to be in the uk from januany 16 to the 23,