Explain how rays ab and ac form both a line and an angle.

a line with points c, a, b has arrows for endpoints.

Check below please

Step-by-step explanation:

1) Rays forming an angle

Since the Circle whose ray are marked by line segments AB and AC, since they both share point A as their common point we can say these pair of rays form an angle

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2) Rays forming a line.

By opening the angle till it gets 180º we have a shallow angle, and prolonging those line segments forever we have line.

3) A line with points C, A, B

A line by definition is a non dimensional entity which is infinite, and a set of points, we graphically represent by placing arrows on it endpoints.

(Figure 3)

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