Երկրաչափություն
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Ա)
AOX=180-140=40
BOX=180-120=60
AOB=140-120=20
COB=120-100=20
DOX=180-50=130
բ)AOB, COB
Գ)
AOB=COB
AOX-COA
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AOE=440
EOB=770
AOB=440+770=1210
![](https://koryun.gaboyan.am/wp-content/uploads/2021/10/image-35.png)
AOE=12037′
EOB=108025′
AOB=12037’+108025’=12102′
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AOB=780
AOC>BOC
78-18=60
AOC=60:2=30
BOC=30+18=48