This section is from the book "Manual Training - Cardboard Construction", by J. H. Trybom. Also available from Amazon: Cardboard Construction.
Construct square 5" and draw lines inside square.



1. Construct rectangle 8"X6".
2. Divide sides into two-inch spaces and connect opposite points.

1. Construct square 8".
'2. Find centres of sides and connect.


1. Construct rectangle 13"X 8".
2. Measure off on long sides 1½", 5", 1½" spaces; on short sides
1½" and 5" spaces.
3. Connect opposite points.


1. Construct equilateral triangle, 8" base.
2. Connect centres of sides with dotted lines.
3. Draw dotted lines 2¼" from and parallel to those just drawn.
measuring on the sides. These last lines should be on the other side of the cardboard, therefore they have to be drawn on the cardboard after the 8" triangle is cut out.
 
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