Circle Theorems Flashcards
1
Q
The angle subtended by an arc at the centre…
A
Is twice the angle subtended at the circumference
2
Q
Angles subtended by the same arc (angles in the same arc)…
A
Are equal
3
Q
What is a cyclic quadrilateral?
A
Every point of the quadrilateral touches the circle
4
Q
Opposite angles in a cyclic quadrilateral…
A
Add up to 180 degrees
5
Q
The angle at the circumference in a semi circle…
A
Is always a right angle
6
Q
The angle between a tangent and radius is…
A
Always 90 degrees
