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There is no specific answer, there is many types of shapes to minerals, except for the circle/sphere.
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.
In 2D, there is the regular circle and the oval. In 3D, there is the sphere (I am not entirely certain this a considered a circle though).
no; for example, a circle and a circle within that circle have no common tangents.
they are both types of shapes
There are countless number of shapes and triangles. Some different types of triangles are iscoleses, right and scalene. Some shapes are circle, triangle, square, hectagon, octagon, prism.....the list goes on and on and on......
How many degrees does a circle have? 360 degrees.
There are no angles in a circle but the circle covers 360° (degrees)
There are infinitely many lines of symmetry on a circle.
There is no such thing as the Afcica circle, nor an Africa circle. And as to antateitic circle, I have no clue what you are on.
There are many types of model aircraft, some are scale models, very exact, but don't fly. Others can be free flying or radio controlled flyers. Some are flown on wires in a circle around you.
a circle has 0 edges.