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Flashcards in Circle Theorems Deck (9)
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1

The angle subtended by an arc at the centre is ....... the angle subtended at the ......

Twice

Circumference

2

The angle at the circumference ...... by the same arc are .....

Subtended

Equal

3

Opposite angles in a cyclic quadrilateral add up to ......

180

4

What is a cyclical quadrilateral ?

A quadrilateral inside a circle .

5

The angle at the circumference in a semi circle is a ......

Right angle

6

The angle between a tangent and a radius is ......

90

7

Tangents which meet at the same point are ...... in length.

Equal

8

The perpendicular from the centre of a circle to a chord ...... the chord.

Bisects

9

The alternate segment theorem.

The angles between a ...... and a chord is ...... to the angle in the alternate segment.

Tangent

Equal