What mean gramatically Angle of vision?

[Anonymous]

What mean in asentences gramatically angle of vision, how I can use in a paragraph, example in ragarding polar bear descripcion
what is the angle in this word on the paragraph

 

[Casiopea]

What mean in asentences gramatically angle of vision, how I can use in a paragraph, example in ragarding polar bear descripcion
what is the angle in this word on the paragraph

'angle' functions as a noun, and 'of vision' modifies 'angle'.

Use an of phrase to modify a noun when the noun expresses an abstract quality.

the size of the portrait ('size' expresses an abstract quality)
the color of the carpet ('color' expresses an abstract quality)
the beginning of the story ('beginning' expresses an abstract quality)

A polar bear's angle of vision is reportedly greater than that of a brown bear's.

Above, 'angle of vision' functions as a noun phrase. It is the object of 'polar bear's'. Since 'polar bear' is animate, living, an animal, -'s works best, like this,

1. The polar bear's angle of vision. (OK)
2. The angle of vision of a polar bear. (Not OK)