论文部分内容阅读
类别 异面直线种类组成数目 (对 )角的大小距离辅助图例正方体棱 :12条面对角线 :12条体对角线 4条(设棱长为 1)棱与棱 12× 4÷ 2 =2 490° 1棱与面对角线 12× 6=7245° 190° 22棱与体对角线 6× 4=2 44 5° 22面对角线与面对角线 12× 5÷ 2 =3 090° 160° 33面对角线与体
Category Different types of straight lines Number of constituents (pairs) Size of angular distance Auxiliary legend Cube: 12 Confrontation lines: 12 diagonals of the body 4 (set to a length of 1) Prism and edge 12 × 4 ÷ 2 = 2 490° 1 edge and face line 12×6=7245° 190° 22 edge and body diagonal 6×4=2 44 5° 22 face line and face line 12× 5÷ 2 =3 090° 160° 33 face lines and body