Circle Theorems Flashcards
1
Q
1)
A
The angle subtended by an arc at the centre is twice the angle subtended at the circumference
2
Q
2)
A
The angles at the circumference subtended by the same arc are equal
3
Q
3)
A
The opposite angles in a cyclic quadrilateral add up to 180°.
4
Q
4)
A
The angle at the circumference in a semicircle is a right angle.
5
Q
5)
A
The angle between a tangent and a radius is 90°.
Tangents which meet at the same point are equal in length.
6
Q
6)
A
The perpendicular from the centre of a circle to a chord bisects the chord.
7
Q
7)
A
The angle between a tangent and a chord is equal to the angle in the alternate segment.
