Question

What are the differences between Plane angle and solid angle?

Answer 1

Difference between Plane Angle and Solid Angle: 

Plane Angle:

• Angle between the intersection of two lines or planes. 
• It is two dimensional 
• Unit is radian.

Solid Angle: 

• Angle between the intersection of three or more planes at a common point. 
• It is three dimensional. 
• Unit is steradian.