.
o i, S, , . . .
.
1. , (. 1).
2. DA2B2C2 [A2//B2//C2//] :
a2////
:
[A2//B2//C2//] [A1//B1//C1//]
. DA2B2C2 (ΔA2/B2 C2/), : [DA2/B2/ C2/] [DABC] (. 3).
3. S1 S2. SC: [S2//C2//] [S1//C1//];
4. 2 , . p1: i2 2, i2 p1
3. [S2 C2] , .p2: [S3 C2]// p2
, .. [S/3 C/2]// ;
p2 [S3 C2] (.13).
.
.13.
1.
S | A | B | C | |||||||||
X | Y | Z | X | Y | Z | X | Y | Z | X | Y | Z | |
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. 14 .
2.
,,,1,2, | |
a,b, l, m, | , |
h f | : |
[AB] | , |
( ) | |
ABC | |
ABC | ( ) , |
: a b | |
p1 | |
p2 | |
p3, p4, | |
x,y,z | : x- , y- , z- |
A/,B/,,1/,2/, A//,B//,1//,2// | : |
a/,b/,, l /, a//b//, l //, | : |
( ): | |
h a foa | (): |
aπ1, bπ1, .. aπ2, bπ2, .. | : |
, .
a // b | ||
a | ||
C b | ||
t | ||
, | A a | |
, | b | |
A B=[AB] | ||
∩ | M=L∩ | |
A L a A a | ||
a m a | ||
^ | , | (h a)^(h//p1) |
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