It's not totally clear but let's say that point is the centroid of an equilateral triangle. From the symmetries angle 1 is 120 degrees since it divides the incircle into three. Angle 2 is half that, 60 degrees so angle 3 is 30 degrees.
Answer:
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Step-by-step explanation:
4.5 ÷ 2
÷ 2
9 / 4
You have to use two points to name a segment. So this you could name DE, EF, FD, and so forth