HG91002

The steps for the design of this exercise in AutoCAD are as follows:

Command: LIMITS
Reset Model space limits:
Specify lower left corner or [ON/OFF] <0.00,0.00>: 0,0
Specify upper right corner <420.00,297.00>: 100,50

Command: LINE
Specify first point: 20,40
Specify next point or [Undo]: @-5,0
Specify next point or [Undo]: @0,-30
Specify next point or [Close/Undo]: @-15,0
Specify next point or [Close/Undo]: @0,-10
Specify next point or [Close/Undo]: @70,0
Specify next point or [Close/Undo]: @0,10
Specify next point or [Close/Undo]: @-15,0
Specify next point or [Close/Undo]: @0,30
Specify next point or [Close/Undo]: @-5,0

Command: XLINE
Specify a point or [Hor/Ver/Ang/Bisect/Offset]: ANG
Enter angle of xline (0) or [Reference]:  45

Command: XLINE
Specify a point or [Hor/Ver/Ang/Bisect/Offset]: ANG
Enter angle of xline (0) or [Reference]:  135

Command: TRIM
Current settings: Projection=UCS, Edge=None
Select cutting edges ...
Select objects or <select all>: 1 found
Select objects: 1 found, 2 total
Select objects: 1 found, 3 total
Select objects: 1 found, 4 total

Command: LINE
Specify first point: 33,18
Specify next point or [Undo]: @4,0

Command: LINE
Specify first point: 33,18
Specify next point or [Undo]: @0,10

Command: LINE
Specify first point: 37,18
Specify next point or [Undo]: @0,10

Command: TRIM
Current settings: Projection=UCS, Edge=None
Select cutting edges ...
Select objects or <select all>: 1 found
Select objects: 1 found, 2 total
Select objects: 1 found, 3 total
Select objects: 1 found, 4 total

Command: REGION
Select objects: Specify opposite corner: 14 found
1 loop extracted.
1 Region created.

Command: EXTRUDE
Current wire frame density:  ISOLINES=4, Closed profiles creation mode = Solid
Select objects to extrude or [MOde]: 1 found
Specify height of extrusion or [Direction/Path/Taper angle/Expression]: 40