正棱锥的有关角的计算,是高考和竞赛的重点和热点,值得我们总结和研究.为此,本文介绍正棱锥特征角关系与应用,供读者参考.定理:正n棱锥S-A1A2A3…A n-1A n的侧面等腰三角形顶角为α,相邻两侧面所成二面角的平面角为β;侧棱与底面所成的角为θ,侧面与底面所成的角为φ,侧面等腰三角形的底角为γ,π是圆周率.则 The calculation of the related angle of positive pyramid is the focus and hot point of college entrance examination and competition, which is worthy of our summary and research.Therefore, this paper introduces the relationship and application of positive pyramid feature angle, for the reader’s reference. Theorem: Positive n-pyramid S-A1A2A3 ... A n-1A n side isosceles triangle vertex angle α, the adjacent two sides of the dihedral angle of the plane angle β; side edge and the bottom surface of the angle θ, the angle between the side and the bottom surface φ, The angle of the bottom isosceles triangle is γ, π is the pi