Answer by Hosam Hajeer for Prove that all three bisecting planes of the...
If $u_1, u_2, u_3$ are the unit normal vectors pointing towards the inside of the trihedral angle, then, the bisector of the dihedral angle between planes (1) and (2) has a normal equal to$ n_{12} =...
View ArticleProve that all three bisecting planes of the dihedral angles of a trihedral...
Prove that all three bisecting planes of the dihedral angles of a trihedral angle intersect along one straight line. I attempted like this we can take one triangle at first as all its bisectors will...
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