Changing Border Line

Problem 1

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.

Applet Problem 1

Drag the red point. Each of the areas P and Q does not change.

Problem 2

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.

Applet Problem 2

Drag the red points. Each of the areas P and Q does not change.