The circle Theorem?

I've looked it up online, and it says that, 'The angle at the centre of a circle standing on a given arc is twice the angle at any point on the circle standing on the same arc'.

Is there anyone who can simplify this for me as I'm still not 100% sure how this works.

Much appreciated :)
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1 Answer

?????????? "standing on a given ark" ??????????

wot if me SIT on the serkel???

Me thank wot em talk bout is the dubel angel idea.

Draw a diameter kros serkel (gotta go thru senter).

Tu make it eezee tu understand, draw horizontal line thru senter.

At far left, draw line from left end av diameter tu NE point on the serkel.

This make angel with diameter.

Then draw line from serkel senter tu same point over on the rite side.

Then, angel at senter=2* angel at left end.
by

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