Circle Theorems Flashcards by Angelica Walton | Brainscape

Q

Line segment from centre to midpoint of chord

A

Intersects at right angles

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Q

Tangent and radius meet

A

Right angles

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Q

2 external tangents

A

Equal in length

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Q

Angle subtended by arc at centre vs circumference

A

Centre is 2x size of circumference

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Q

Angles subtended by arc in same segment

A

Equal

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Q

Angle subtended in semi circle

A

Right angle

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Q

Cyclic quadrilateral

A

Opposite sides add up to 180

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Q

Angle between tangent and chord is equal to

A

Angle subtended in opposite segments

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