Байарыст 2018-1 №4 вариант 17

Bayarystanov A.O. 2018-1 work #4 option 17
The vertices of the pyramid are A(5;3;6); B(-3;-4;-5); C(7;-6;8); Given D(4;0;-9). It is necessary to find: a)|AB|; b) BC; BD; c) S ABC; d) V ABCD.

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