先用量角器量出下列各角的度数,再按要求分类. 锐角有 直角有 钝角有 .
( )-258=159 256+( )=589
( )+356=912 128-( )=11
( )+125=352 408-( )=205
( )+351=652 125-( )=22
( )+325=561 641-( )=365 ( )-158=369 356+( )=515