It doesn't. It's a complex polygon with re-entrant sidesso has a number of angles depending on its shape.
Between two points - like a star and Earth - you would have a line, not an angle. Angles may be indicated between two stars - that is, the angle would be star 1 - Earth - star 2.
the answer is 5 each tip of the star is a acute angle and each angle on the inside of the star is an obtuse angle. there are 5 obtuse angles and no right angles.
We would typically use a sextant to measure the angle of a star above the horizon.
star angle prism
A sextant.
Sirius will have a greater angle, because it is closer to us.
The answer depends on which angle is 39 degrees.
Navigators measured the angle of Polaris (North Star) at their home port. To return they sailed until the star was at the angle of home port - then turn left or right and "sail down the latitude," keeping the angle the same all the way.
The angle between the north star and your northern horizon is approximately the same as your latitude north of the equator.
Sextants
o hours
Stars do not have arms.