MAE 1351 EXAM 4: Updated A+ Guide Solution

Orthographic projections - Pictorials are representations of an object in which all the dimensions are visible - Pictorials give a quick representation of a part do that anyone can understand it - Realistic and useful, but not precise - 90 degree corners shown at angles other than 90 - Circle drawn as ellipses or oval - multiview orthographic projections - Orthographic: every point on the object is projected at right angles to the viewing plane (parallel to each other) - Multiview: select views such that every feature is drawn at least once in its true view - True View: shape and dimensions of an object are shown as exactly as they are in real life - In practice viewing planes are chosen to be parallel to object’s front/side/top - - Features on planes parallel to the viewing plane will be shown in their true view - Otherwise they will appear foreshortened; measurements will not be possible - Specifically, planes and edges perpendicular to the viewing plane will collapse into single / https lines and points