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Isometric and Orthographic projections, Orthographic - Coggle Diagram
Isometric and Orthographic projections
Definition
3D drawing method showing object in 3 equal angles (X,Y,Z)
key features
all axes are foreshortened
all angles between axes are 120°
angle projections
first angle
used in europe
projections are on the opposite side
third angle
used in america
projections on the same side
types of lines
visible
used to represent features of an object that are visible in a particular view
solid, thick lines
provide a clear and accurate representation of the object's geometry
hidden
represent features that are not visible in a particular view.
dashed line
crucial for understanding the complete structure of the object, including its internal components
center
indicate the centers of holes, cylinders, and other symmetrical features
alternating long and short dashes
help to ensure that symmetrical features are properly positioned and aligned in relation to each other
Orthographic
2D views of object from different angles
key features
shows exact proportions
no 3d effects
common view
front
top
side
purpose
communicate precise designs
essential in designs