SOLUTION: opps I forgot to put the link for the diagram on my other question!! here it is: http://imgur.com/a/xAcxE sorry. here's the question I asked: Is there any way to prove if a lin

Question 1047760: opps I forgot to put the link for the diagram on my other question!!
here it is: http://imgur.com/a/xAcxE sorry.
here's the question I asked: Is there any way to prove if a line is tangent to a circle without using the radius of the circle?
For example, in this question I'm trying to show that the line DO is tangent to the circle in red. I don't know the centre of the circle, so I can't use the radius to show that it is perpendicular. I know that OAE=AEO=EDG=x and I don't know where to go from there... could you please help me.
Thanks!

Answer by ikleyn(52790) (Show Source): You can put this solution on YOUR website!
.
If you want to get the answer, formulate your problem word-by-word as it is in the assignment / in a textbook.

The text you posted here doesn't help.

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