Final answer:
While the question lacks context, it seems to inquire about the implications of having central angles that are 120°. In geometry, it's impossible for a triangle to have angles of 120° each, while in optics, such angles between mirrors could determine the number of images created. Context is crucial to provide a definitive answer.
Step-by-step explanation:
The question, "Can you conclude that =, given the central angles are all 120°?" is missing some context, however, we can deduce it relates to a scenario involving angles. If we assume a geometric context where the central angles are part of a figure, such as a triangle or the angles between mirrors, then knowing that all central angles are 120° can lead to different conclusions based on the scenario.
For instance, if the question pertains to the angles within a triangle, since the sum of the angles in a triangle is always 180°, it would be impossible for all three angles to be 120°. Thus, the answer would be no. If the question concerns the angles between flat mirrors, as mentioned in the reference problems, the central angles would determine the number of images formed. In this case, the number of images (n) can be determined using the formula n = 360° / angle - 1. So for mirrors at an angle of 120°, the formula yields 2 images. However, we would need more context to provide a definitive answer regarding the equal sign (=) in the question.
Step 8 from the reference problems emphasizes the importance of reasonability in checking if an inference is logical based on the known rules, such as the maximum angle for interference patterns being less than 90°.