Question
In the square grid, line ST has been drawn. If a line RU is drawn from point U and is parallel and as long as line TS, select the point where point U is located at.
1 m

Click button first when a symbol is required. X

In the square grid, line ST has been drawn. If a line RU is drawn from point U and is parallel and as long as line TS, select the point where point U is located at.