Question

срочно !!!!!!!!!!!!!!!!!​

Answer 1

$\sf~~\angle~1=x~~;\angle~2=5x~~;\angle~3=6x~~;\angle~4=8x~~;\angle~1+\angle~2+\angle~3+\angle~4=360\Longrightarrow~~x+5x+6x+8x=360~~\Rightarrow~~20x=360~~\Rightarrow~~x=360:20=18\Longrightarrow~~\angle~1=x=18^\circ~;\angle~2=5x=5\cdot18=90^\circ~;\angle~3=6x=6\cdot18=108^\circ~~;\angle~4=8x=8\cdot18=144^\circ~~.$ Ответ: $\boxed{\bf\Huge18^\circ;90^\circ;108^\circ;144^\circ.}$ Опуклим.