两个同底等高的三角形,形状一定相同,面积也相等. .
0.75===3: = %
﹦24: ﹦ ÷20﹦ %
÷ ==9: = (小数)
÷ == %== : = 折= 成.
= ÷32=( 0.125 )填小数=6:( )=12.5%.