4 angles are formed
A bisector splits the angle into to equal halves.
If AB is a perpendicular bisector of CD then four 90 degreee angles are formed.
In space, an infinite number of rays can bisect an angle. For any given angle formed by two rays, there is one specific ray that represents the angle's bisector, but you can create infinitely many rays along that bisector in both directions. Each of these rays divides the angle into two equal parts. Thus, while there is one unique bisector, the number of rays along it is infinite.
3
12
|__ that is a right angle, if it was connected at least. But it's close enough! NONE! * * * * * It has one, which is the angle bisector.
One
None. All are right-angles (90 degrees). An acute angle is less than 90 degrees and more than zero degrees. The single angle formed by the letter V is an acute angle.
An acute angle has one angle.
A five-pointed star, often referred to as a pentagram, has 10 angles in total. Each of the five points contributes an angle at the tip, and there are also angles formed at the intersections of the lines that connect the points. Thus, when you sum the angles at the tips and those formed internally, you arrive at 10 angles.
There are infinitely many such angles.
A semicircle itself does not have any right angles; it is a half-circle. However, if you consider the angle formed at the endpoints of the diameter when a line is drawn to any point on the arc of the semicircle, that angle is a right angle (90 degrees). Thus, while the semicircle itself has no right angles, it can form right angles with lines drawn to points on its arc.