Answer:
c
Step-by-step explanation:
The answer is 15. just replace the letters with the numbers they're equal to.
From the information given, the rotated triangle is same as the original triangle. This is because, vertices of the rotation remain at the origin - (0,0).
<h3>What is the proof the above?</h3>
Notice that the question states: △A'B'C' is the image of △ABC. Given that the △ without primes is the original and the one with primes depict the rotated triangle,
under a rotation about the origin, (0,0) (0,0) (0, 0), indicating no movement,
△A'B'C' is in the same position with △ABC.
Learn more about rotation at:
brainly.com/question/27915888
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