Question 6: In space with coordinate system \(Oxyz\), give the point \(A\left( {1\,;\,2\,;\,3} \right)\,\). The point symmetrical to A through the plane \(\left( {Oxz} \right)\) has coordinates A. \(\left( {1\,;\, – 2\,;\,3} \right )\,\). B. \(\left( {1;2; – 3} \right)\,\). C. \(\left( { – 1\,;\, – 2\,;\, – 3} \right)\,\). D. \(\left( { – […]
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