Mathematics 4024 · O Level · Circle theorems I

Circle theorems I — practice question

Points $A$ and $B$ lie on the circle with centre $O$. The lines $TA$ and $TB$ touch the circle at $A$ and $B$.
(main)[3]

Show that triangles $OBT$ and $OAT$ are congruent. Give a reason for each statement you make.

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