2000006512

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Project ID: 
2000006512
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Let \(ABCDV\) be a rectangle based-pyramid, where \(V\) is its apex and \(L\), \(N\) are the midpoints of its edges \(BC\), \(CV\) respectively. What is the cross-section of the pyramid if we slice it with a plane \(ALN\)?
a quadrilateral \(ALNR\) with point \(R\) lying on the edge \(DV\)
a triangle \(ALN\)
a quadrilateral \(ALNR\) with point \(R\) lying on the edge \(AV\)
a quadrilateral \(ALNR\) with point \(R\) lying on the edge \(BV\)