Cub

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salazar
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Joined: Mon Apr 06, 2009 7:36 am
Location: Alba Iulia

Cub

Post by salazar »

Fie ABCDA'B'C'D' un cub cu latura de lungime a si punctele \( M\in (A^{\prime}D^{\prime} \), \( N\in (AB \), \( P\in (CC^{\prime} \) astfel incat D'M=AN=CP=x, \( x\in (0;2a) \). Aratati ca:
a) \( (MNP)\parallel (AD^{\prime}C) \)
b) \( V_{B^{\prime}MNP}<V_{B^{\prime}A^{\prime}C^{\prime}D. \)


G.M 12/2009
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