Jesús de la Peña Hernández
6.6 OBTENTION OF RECTANGLES WITH THEIR SIDES IN VARIOUS PROPORTIONS:
6.6.1 2:1, start up with a square whose side is one unit. ABCD is the rectangle obtained.
6.6.2 2 : 1 (DIN A), with BA = 1. The solution is in step 3 :
In ∆ADC, ang DAC = 45º; AD = AB = 1;
2AD
AC= ;
12
=
ACAB6.6.3 2 : 1 (envelope version)
(^123)
A
B
C
E D
1
C
B
D
A
(^2) discard
B
1
A
discard
2 3
D
C
A B
C
A