2000006512

SubArea: 
Positional properties
Level: 
B
Project ID: 
2000006512
Source Problem: 
2000006511
Accepted: 
0
Clonable: 
0
Easy: 
0
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 \(BV\)