在$▱ABCD$中:(1)周长为44cm,若AB比BC短2cm,则AB=_____cm,AD=_____cm;(2)若$\angle A=3\angle B$,则$\angle C=$_____,$\angle D=$_____.
的有关信息介绍如下:$\left ( {1} \right )\because ▱ABCD$周长为$44cm$,$\therefore AB+BC=22$,且$BC-AB=2$
$\therefore AB=10cm$,$BC=12cm$
$\therefore AD=BC=12cm$
$\left ( {2} \right )\because $平行四边形$ABCD$中,$AB\parallel CD$
$\therefore ∠A+∠B=180°$,且$\angle A=3\angle B$,
$\therefore ∠A=135°$,$∠B=45°$
$\therefore ∠C=∠A=135°$,$∠D=∠B=45°$
故答案为:$\left ( {1} \right )10$;$12$;$\left ( {2} \right )135°$;$45°$.