In learner-centred methods, the teacher/instructor is both a teacher and a learner at the same time. In the words of Lawrence Stenhouse, the teacher plays a dual role as a learner as well âso that in his classroom extends rather than constricts his intellectual horizonsâ.
Two-point perspective has one set of lines parallel to the picture plane and two sets oblique to it. Parallel lines oblique to the picture plane converge to a vanishing point, which means that this set-up will require two vanishing points. Walls in 2-point perspective, converging toward two vanishing points.
Within each longitudinl zone the transverse mercator projection is used to give co-ordinates (eastings and northings) in metres. For the eastings, the origin is defined as a point 500,000 metres west of the central meridian of each longitudinal zone, giving an easting of 500,000 metres at the central meridian. For the northings in the northern hemisphere, the origin is defined as the equator. For the northings in the southern hemisphere, the origin is defined as a point 10,000,000 metres south of the equator.