Question

definition of an angle
durus definition: an angle is two rays, such as (overrightarrow{va}) and (overrightarrow{vb}), that share a common vertex, which in this case would be point v.
teachers comments
were you thinking of the measure of an angle?
olivers definition: an angle is the amount of space between two rays. for example, (angle avb) is the amount of turn between (overrightarrow{va}) and (overrightarrow{vb}).
correct! your mental acuity continues to impress me.
carlos definition: the intersection of two lines such as ac and bd
sorry this is incorrect

Explanation:

An angle is defined as the amount of space or turn between two rays sharing a common vertex. Duri's definition only mentions the rays and common - vertex without the concept of the measure of the space between them. Carlos' definition is wrong as the intersection of two lines is a point, not an angle. Oliver's definition correctly captures the idea of an angle as the amount of space between two rays.

Answer:

Oliver's definition is correct.