Part of the information summarized in this paper has already been published (Lo Presti 2013). The context (Study Course, Subject) within which the case history has been used and the case history ...

1.4. The Equation of a Straight Line: (1) Slope-Intercept Form, (2) General Form, (3) Intercept Form 17 1.5. The Angle Between Two Straight Lines. The Equation of a Pencil of Straight Lines Passing ...