it has no right angles because it has a curved line all around!
Simple's!
None. A circle has no angles: it comprises a smooth curve.
16
A circle.
Just the one and it is its radius when at right angles to the semi-circle's centre
It has no Right angels because it has a curving line all around! Simples!
None. A circle has no angles: it comprises a smooth curve.
16
There are many angles inside a circle. You have inscribed angles, right angles, and central angles. These angles are formed from using chords, secants, and tangents.
A circle.
Just the one and it is its radius when at right angles to the semi-circle's centre
Infinite angles. If you are referring to degrees then the answer is 360, but if the question is angles I can get as many angles as I want inside a circle.
It has no Right angels because it has a curving line all around! Simples!
No.
A circle.! or sphere
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.
A circle does not have any angles.
In one complete revolution, there are four right angles (90 degrees each), corresponding to the four quadrants in a circle. Therefore, in two revolutions, there are a total of eight right angles.