# Help with circle proof please!!!

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#1
Hi, please can you check my answer to this question, I've attatched the diagram.
The question is: Prove that APB and APC are congruent (3 marks)
A B and C are points on the circumference, angle ABC= and ACB, PB and PC are tangents.

BP = CP (the lengths of tangents from a point are equal
Both triangles share the side AP
ABC=ACB and so ABC must be isosceles, and AB=AC

Therefore the triangles APC and APB must be congruent (SSS rule)
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#2
And would angle ABC be 50 degrees?? =/
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13 years ago
#3
You didn't attach anything...Can you attach it?
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#4
lmao. sorry, i've attatched it now.
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#5
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13 years ago
#6
Yeah it's correct.
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#7
Thanks very much =]
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