求出下列图形中x的值：

求出下列图形中x的值：

根据题意，得

$\left ( {1} \right )x+x+x+x+60=\left ( {5-2} \right )\times 180$

$4x+60=540$

$4x=480$

$x=120$

$\left ( {2} \right )3x+3x+2x+4x=\left ( {4-2} \right )\times 180$

$12x=360$

$x=30$

$\left ( {3} \right )\because AB\parallel CD$

$\therefore \angle B+\angle C={180}^{\circ }$

$\because \angle C={60}^{\circ }$

$\therefore \angle B={120}^{\circ }$

$\therefore x+135+120+60+150=\left ( {5-2} \right )\times 180$

$x+465=540$

$x=75$.