NCERT Example 7 - Introduction to Three Dimensional Geometry

Question: Show that A(1, 2, 3), B(-1, -2, -1), C(2, 3, 2), D(4, 7, 6) form a parallelogram ABCD but not a rectangle.

Answer: ABCD is a parallelogram but not a rectangle.

Full step-by-step NCERT solution with diagrams on Something by Zero.

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