As shown in the figure, in the square grid of 4 * 4, what is the size relationship of ∠ 1, ∠ 2, ∠ 3?

As shown in the figure, in the square grid of 4 * 4, what is the size relationship of ∠ 1, ∠ 2, ∠ 3?

Can't you pass the picture? Let me help you. ① open the icon "draw picture" on the desktop (double-click). That is, you can draw pictures with the mouse and the tools on the left. You can use the tools as soon as you see them. ② after the drawing is finished, click "file" on the left side of the upper row, and then click "save as..." in the table . and a chart will appear. You can