Question

What is diffrence between solid angle and plane angle?​

Answer 1

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⏩Plane angle is the angle between two lines meets at a vertex.

⏩Ex:- angle between two lines drawn on a paper

⏩Solid angle is the angle between the two sides of a 3D object.

⏩Ex:- angle between the two sides of a cone

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Answer 2

plane angle is angle between two line meeting at the vertex on the other hand soild angle is the angle subtended by the object in three dimensional space from a point angle is space between two interesting lines and is measured in degree in case of planning for Radiance (in case of soil ).