star has order-1010 rotational symmetry, with 1010 internal right angles as shown.What is the size of each of the obtuse angles marked with a dot?

The question seems to be about a star with 10^10 rotational symmetry and 10^10 internal right angles. However, without a visual representation or more specific details about the star's structure, it's difficult to provide an accurate answer.

In general, the size of an angle in a regular star (a star where all angles and sides are equal) can be calculated using the formula:

(angle) = 180*(n-2)/n

where n is the number of points on the star.

But in this case, the star seems to have a complex structure with a very large number of points and internal angles, so this formula may not apply directly.

If you could provide more details or a diagram of the star, I would be able to give a more accurate answer.