Q: Three rays necessary to determine an angle?

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2 rays

two rays make up an angle, so the rays are the sides of the angle.

There are three ways to name an angle, provided there are only three points on the angle. Say the vertex is point A, and there are two rays extending. Each has another point on it, points B and C. You can name this angle BAC, CAB, or A.

In planar geometry, an angle is the figure formed by two rays, called the sides of the angle, sharing a common endpoint, called the vertex of the angle.

the vertex is the point where two rays begin and form and angle

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Yes.

2 rays

true - apex

2 rays

true :)

Two intersecting rays form an angle. Without two rays you do not have an angle.

Reflected rays are equal to the angle of incoming rays.

two rays make up an angle, so the rays are the sides of the angle.

The point at which the rays of an angle intersect is the vertex.

They are the sides of an angle.

The angle of light rays coming into an object is equal to the angle of light rays reflected off the object, following the law of reflection. This means that the angle of incidence is equal to the angle of reflection.

Two rays with the same origin make an angle.