Answer: A) Copy the angle
When you are constructing triangles when given a Side, Angle, and Side (SAS), you should first copy one of the side.
Then, you should copy the angle that is between the sides. (That is the answer to your question)
Finally, you will copy the last side. Then, you will have congruent triangles.
The reflected points would be (-3,-7)
The x coordinate would stay the same but the y-coordinate would be the opposite