Engineering Graphics
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, Define a decision matrix to compare design solutions against one another, using specific criteria that are
often based on project requirements
4 Types of views 1. multiview (orthographic)
2. axonometric (isometric)
3. oblique
4. perspective
Co-ordiate Systems (2) -positive (right handed) and negative (left handed)
- classification: cartesian, polar and cylindrical
3 different Scale factors 1. magnify
2. reduce
3. remains the same
Magnification Scale X:1
Reducation Scale 1: X
Same Scale 1:1
Define Multiview each view shows an object with 2 dimensions
-a multiview drawing of an object will produce six views, called the principal
views
Six Principle Views 1. front
2. top
3. bottom
4. rear
5. right side
6. left side
Define Axonometric all three dimensions are in one view
-drawings are classified by the angles between the lines comprising the
axonometric axes
Isometric all three angles are equal
-the width and depth dimensions are sketched 30 degrees above the horizon
Dimetric two angles equal
trimetric three angles are unequal