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Slide 2

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Now they are many theorems this PowerPoint will go
through them all but the ones that are more likely to
appear on the exam will be highlighted with this star.
POSSIBLY
ON THE
EXAM
You need to be able to remember the
reasons why it is a certain angle. You will be asked for a certain reason
in the exam.…read more

Slide 3

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A circle Arc XY forms an
You need to
angle at the
know the
circumference.
parts of a
circle!
X
Tangent.
Chord.
Y…read more

Slide 4

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Theorem 1:
x POSSIBLY
ON THE
EXAM
2x
The angle formed at the centre of a circle is twice the
angle formed at the circumference.…read more

Slide 5

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Theorem 2:
All angles formed with the
x in are equal due to them
x
being on the same arc.
x x
Draw the arc in!
The angle formed by an arc in the same segment of a
circle are equal.…read more

Slide 6

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Theorem 3:
A cyclic
x quadrilateral is a
quadrilateral with a
circle drawn on
their vertices.
y X's add up to
180 degrees
and the y's add
up to 180
y x degrees.
The opposite angles in a cyclic quadrilateral add up to
180 degrees.…read more

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Slide 8

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Slide 9

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Comments

Alicia

You only cover 4 of the possible 8 theorems, however, it was put into simple, concise, easy to understand language!

Thanks!

Bethany Cunningham

Thanks, and I know because these are the ones most common in GCSE and who most people struggle at.

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