如图是一个等边三角形.已知∠1=∠2,∠3=∠4,x的度数是 度.
=0.375= :16= %
0.6== ÷30= %
9÷ =0.75= :24= %= 折.
9÷ =0.75== :36= %
6÷ = /16=0.25= :4= %