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B x a
-a x b
If letter order is the same
Result is equal. Eg. If both follow order abcabcabc
Area of parallelogram
| a x b |
Area of a triangle
½ | a x b |
Volume of parallelopiped
| a . | b x c | |
Volume of a tetrahedron
1/6 | a . ( b x c ) |
If 2 vectors a parallel
a x b = 0