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18 aRwereT marTkuTxedis simetriis RerZebi.<br />
19 daaxasiaTeT yvela is wrfe, romelic mocemuli RerZuli simetriisas<br />
amave wrfeSi gadadis.<br />
20 sakoordinato sibrtyeze daxazeT ABCD marTkuTxedi, A(2; 0), B(2; 9),<br />
C(9; 9), D(9; 0)<br />
a) daasaxeleT raime oTxi wertili, romlebic AB gverdis paralelur<br />
simetriis RerZs ekuTvnis;<br />
b) daasaxeleT raime oTxi wertili, romlebic BC gverdis paralelur<br />
im wrfes ekuTvnis, romelic marTkuTxedis simetriis RerZia.<br />
21<br />
daxazeT suraTze gamosaxuli<br />
asoebis simetriis RerZebi.<br />
22 gamoiyeneT samkuTxedis utoloba da<br />
aCveneT, rom ABCDE texilis sigrZe metia AE<br />
monakveTis sigrZeze.<br />
A<br />
B<br />
C<br />
D<br />
E<br />
miTiTeba. AB+BC+CD+DE>AC+CD+DE...<br />
23 rogor mivideT umoklesi gziT A<br />
wertilidan B wertilSi a `gzis~ raime<br />
wertilis gavliT<br />
A<br />
a M N<br />
B<br />
A<br />
miTiTeba. nacvlad AMB, ANB da sxva amgvari texilebis<br />
sigrZeebisa, ganvixilavT A¢MB, A¢NB da a. S. `gzebs~ da maT Soris<br />
virCevT umokless. A¢ aris A wertilis simetriuli a wrfis mimarT.<br />
49
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