Circle theorems | Revision Server | Page 1

unborn fossil Jun 20, 2023, 3:27 PM

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Help!

sick temple Jun 20, 2023, 3:29 PM

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so CO = OD since they're both radii

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therefore angle ODC would be the same as OCD so itd be 25

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then to get the final angle in the triangle OCD, you do 180- 50 to get 130

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to find angle DOE, you use the straight line = 180 rule and do 180-130 so 50 again

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ODE would be 90 since radii and tangents of a circle meet at 90 degrees always

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then to get y, you do 180 - (90+50)

unborn fossil Jun 20, 2023, 3:58 PM

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any tips on remebering all the circle theorems

#Circle theorems