1)Ох=(-1-3):2=-4:2=-2
Оу=(4-10):2=-6:2=-3
О(-2;-3)
2)О(2;-4) R=5
3)АВ=√(2-5)^2+(-3+7)^2=√9+16=√25=5
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1)Ох=(-1-3):2=-4:2=-2
Оу=(4-10):2=-6:2=-3
О(-2;-3)
2)О(2;-4) R=5
3)АВ=√(2-5)^2+(-3+7)^2=√9+16=√25=5