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Trong không gian tọa độ Oxyz cho tam giác ABC đều với A(6;0;0),B(0;y;0) và C(0;0;z)
3 months ago
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Trong không gian tọa độ Oxyz cho tam giác ABC đều với A(6;0;0),B(0;y;0) và
C(0;0;z).Gọi I là tâm đường tròn nội tiếp tam giác ABC.Tính khoảng cách OI
A.OI=2√2 B.OI=3√2 C.OI=3 D.OI=2√3
#ToanLop12
#hinhhockhonggianoxyz
#hinhhockhonggian
#OxyzGeometry
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