7 circle theorums
1 the angles between a tangent and a radius is 90 degrees
2 the angle at the origin is double the angle at the circumfrence
3 the oppsite angles in a cyclic quadrilateral add up to 180 degrees
4 the angle of a trianle in a semi circle is 90 degrees
5 the alternate angles subtended at a segment are the same
6 the tangents are the same length from the same point of origin.
7 the alternate angle at a tangent and a triangle is the same.
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Postulates are statements that are assumed to be true without proof. Theorums are statements that can be deduced and proved from definitions, postulates, and previously proved theorums.
How many degrees does a circle have? 360 degrees.
There are infinitely many lines of symmetry on a circle.
There are 360o in a circle.
There are infinite diagonals in a circle.