Tips for doing circle geo? (1 Viewer)

[qwert73]

I can barely do any circle geometry questions from the old fitzpatrick, I spend like 1h + on them but I never see the way to get to the answer. Do you have any tips for circle geo?

 

[Shuuya]

Label anything you can see on the diagram (e.g. equal angles, arcs etc) , and then somehow if you're lucky it'll all fall together

 

[ishfish]

Circle geo is my favourite and I usually find them challenging in a good way
Ask yourself the following.
1. From the diagram, what is already shown and assumed?
2. Can I draw anything to unlock new theorems? (some q's are a matter of drawing an extra line or a circle etc)
3. From the information given to me, can I come up with a theorem to get started? (eg. If they tell you specifically <SPQ=90, try to get proofs from there)
4. Always always always look for angles at the centre and circumference (or same arc)
5. Any assumed info like radii that can be found?
Most are super hard because its harder 3u which is really complex. So keep at it and have a list of formulas handy and check them off for each question!
6. If not, start with questions with full working out. (Before jumping straight to txtbooks like cambridge, jump to terry lee for complete explanations!!)

Hope this helps dude (Another 4u-er in 2k16)