Naturally, distant objects appear smaller than their real sizes e.g. the stars, the sun, the moon etc. For instance, the farther we look down a long corridor in a building, the narrower it appears to come. Perspective drawing therefore shows the pictorial representation of the apparent reduction in size of a distant object. Since architecture deals with large objects like buildings, perspective drawing becomes more useful in making architectural drawings realistic than either isometric or oblique drawing. Distant parts of a building are shown in perspective as tapering to a point, just as they appear to an observer of the actual building. Perspective projection can be in one-point, two-point or three-point perspective.
Any perspective representation of a scene that includes parallel lines has one or more vanishing points is a perspective drawing.
One-Point Perspective Drawing
One-perspective drawing with parallel lines that meet at vanishing point
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