 Given: a Line \(L_i\) in the plane, \(n\) angles \(\theta_i\), a ratio \(\beta\), a line segment \(a\). For an point \(P\) in plane, let \(d\) be the oblique distance between \(P\) and \(L_i\) such that \(P\) creates \(\theta_i\) with \(L_i\).