Conventions used while drawing the projections of points

With respect to the 1^st angle projection of point “P’ shown in figure 2,

• Top views are represented by only small letters eg. p .
• Their front views are conventionally represented by small letters with dashes eg. p΄
• Profile or side views are represented by small letters with double dashes eg. p΄΄
• Projectors are shown as thin lines.
• The line of intersection of HP and VP is denoted as X-Y.
• The line of intersection of VP and PP is denoted as X1-Y1

Figure 2. Showing the three planes and the projectionof the point P after the planes have been rotated on to the vertical plane.

Point in the First quadrant

Figure 3 shown the projections of a point P which is  40 mm in front of VP, 50 mm above HP, 30 mm in front of left profile plane (PP)

Figure 3. Projection of the point “P” on to the three projection planes before the planes are rotated.