4.2.1. . k = m = n = 0,82. k = m = n = 1, 1:1. . 4.2.
(, , ) . , , .
x, y, zB (. 4.1) O (. 4.2) , x. Oy y 1. 1 ( . 4.1 1) . , 1 , z Oz, . O1 .
.
, , , (. 4.3), , .
, Oy, Oz, . k = m = n = 1 2 a= 1,22 d, 2 b = 0,71 d, d .
. 4.3 .
. 4.4 AB (2 a = 1,22 d) CD (2 b = 0,71 d). O . . O , .
,
AB CD, .
4.2.2. . : k = n = 0,94 m = 0,47. k = n = 1 m = 0,5, z 1:1, y 1:2.
. 4.5 : O 710', Oy 4125'.
. 4.5 (.. ..) . .
4.2.3. . . 4.6 .
B, , . 4.2 (x, y, z) O .
. 4.7 , xOy. B x, y, z O .
. 4.8 , xOy. M. x, y, z O M CD.
.