Байарыст 2008 №4 вариант 1

Bayarystanov AO 2008 work №4 options 1
The ceilings of the pyramid A (3; 4; 5); B (1; 2; 2); C (–2; –3; 6); D (3; –6; –3) is given. It is necessary to find: a) | AB |; b) BC; BD; c) S ABC; d) V ABCD.

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