The land is divided into two parts (P and Q) by the border ABC. Redraw a straight border line passing through point A so that each of the area does not change. |
Drag the red point. Each of the areas P and Q does not change. |
The land is divided into two parts (P and Q) by the border ABCD. Redraw a straight border line passing through point A so that each of the area does not change. |
Drag the red points. Each of the areas P and Q does not change. |