Math 11 Chapter 3 Lesson 4: Two perpendicular planes

Math 11 Chapter 3 Lesson 4: Two perpendicular planes 1. Summary of theory 1.1. Angle between two planes a) Definition The angle between two planes is the angle between two lines perpendicular to the two planes respectively. – If two planes are parallel or coincide, then the angle between the two planes is (0^o). b) …

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