Question

What do you mean by solid angle?​

Answer 1

Answer:

Explanation:

In geometry, a solid angle is the two-dimensional angle in three-dimensional space that an object subtends at a point. It is a measure of how large the object appears to an observer looking from that point. In the International System of Units, a solid angle is a dimensionless unit of measurement called a steradian.

Answer 2

Answer:

a three-dimensional analogue of an angle, such as that subtended by a cone or formed by planes meeting at a point. It is measured in steradians.