Question

which is a property of an angle?○ has two sides that each extend forever in both directions○ has two endpoints○ has two center points○ has two rays that share a common endpoint

Explanation:

An angle is defined as a figure formed by two rays that share a single common endpoint (called the vertex).

• The first option describes lines, not the sides of an angle (angle sides are rays, not lines extending infinitely in both directions).
• The second option is incorrect because an angle has one common endpoint (vertex), not two separate endpoints.
• The third option is invalid as angles do not have "center points".

Answer:

has two rays that share a common endpoint