There are two villages on the same side of the river Mn. A / B should lead two canals from the same point along the river to irrigate vegetables in the two villages

There are two villages on the same side of the river Mn. A / B should lead two canals from the same point along the river to irrigate vegetables in the two villages

Take the river as the symmetry axis, find the symmetry point m of a, and the intersection point C connecting MB and the river is the point you are looking for
Principle: between two points, the vertical line is the shortest

There are two villages a and B separated by a river. Now we need to build a bridge (the bridge is perpendicular to the river bank). Please find out the location of the bridge (represented by line Mn) in the picture to make the shortest distance from a to B

As shown in the figure, make BC ⊥ n through point B, and BC is equal to the river width. Connect AC intersection line m and m, and make Mn ∥ BC