1 .		Axonometric projection rotates the object so that all three dimensions can be seen in one view.
2 .		In axonometric projection, the observer is considered to be at a fixed distance from the object.
3 .		Axonometric projections are classified as:
4 .		Isometric means "unequal measure."
5 .		An isometric projection is one which all angles between the axonometric axes are equal.
6 .		An isometric projection is rotated 45° and tilted 35°16'.
7 .		An isometric projection is 25% larger than an isometric drawing.
8 .		Isometric drawings are made more often than isometric projections.
9 .		Hidden lines are always shown on an isometric drawing but not on an isometric projection.
10 .		Nonisometric lines are not parallel to isometric axis lines.
11 .		A regular protractor can be used to set off angles in isometric.
12 .		Holes drawn in isometric need to be developed as an ellipse.
13 .		There are two axis lines used to describe an ellipse. These are the major axis and the minor axis.
14 .		Threads drawn in isometric resemble symbolic thread pitch.
15 .		Two dimensioning methods are approved by ANSI: the unidirectional system and the pictorial plane or aligned system.
16 .		A dimetric projection is an axonometric projection of an object so placed that three axis lines make equal angle.
17 .		A trimetric projection is an axonometric projection of an object so placed that no two axes make equal angles.
18 .		Profs. L. Eckhart and T. Schmid of the Vienna College develop Method of Intersections in 1937.
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