Two Circles and a Hidden Midpoint

CirclesVideo challenge · SAV17

Two Circles and a Hidden Midpoint

CBSE Class 10 · Solve it one decision at a time. A wrong pick earns a nudge, never the answer.

Step 1 of 3

The problem

Two circles touch externally at TT. A common tangent touches the larger circle at AA and the smaller circle at BB. The tangent to both circles at TT meets ABAB at PP. Must PP be the midpoint of ABAB? Give a proof or a counterexample.

Step 1 · Your move

Before opening any steps, what is your answer: must PP be the midpoint of ABAB?

ABTP
Two circles touch externally at T · Common tangent AB · Tangent at T meets AB at P
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