Traditional Culture Encyclopedia - Photography and portraiture - The vertex a of the hypercube ABCD-a1b1c1d1is a straight line L, so that the angles formed by L and the edges AB, AD, AA 1 are all equal. How many straight lines can I make?
The vertex a of the hypercube ABCD-a1b1c1d1is a straight line L, so that the angles formed by L and the edges AB, AD, AA 1 are all equal. How many straight lines can I make?
Article 1
Let the angle formed by L and sides AB and AD be equal, and the photography of L on the plane of BAD angle is the bisector of BAD angle. That is, l is in the plane ACC 1A 1.
Similarly, l is in the surface ad1c1b.
The intersection AC 1 is l.
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