2101050÷345=____
5.31×1.8____5.31
3.9÷1.8____3.9
7.6×1.2____7.6÷1.2
4.5÷0.5____4.5×2.
如图,在四边形ABCD中,AB=AD,CB=CD,点E在AC上,则图中全等三角形共有
—What date is it today?
—It's of April.