Circle Theorems Flashcards
What is the rule about the tangent and the radius?
It is always 90 degrees
What are the rules about tangents from a common point?
They are always equal
What is the rule about angles in the same segment which stand on the same chord?
They are always equal
What is the rule about angles in cyclic quadrilateral?
Diagonally opposite angles add to 180 degrees
If there is a line drawn frn the centre of the circle in the midpoint of a chord what do you know?
That the line drawn’s angle will equal 180 degrees
What can be told about rhe angle in a semi circle?
90 degrees
What is the angle between the tangent and the side of the triangle?
It is equal to the opposite angle that is interior
What is the angle at the centre of the circle equal to?
Twice the angle at the circumference ( outer edge )
