Байарыст 2018-1 №4 вариант 6

Bayarystanov A.O. 2018-1 work №4 option 6
Pyramids of the table A(3;4;2); B(–2;7;–5); C( 9 ;–3;6 ); D(8;5;0) Berylgen. Taboo kerek: a)|AB|; b) BC; BD; c) S ABC ; d) V ABCD.

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