Note that although these questions are marked as "Synthetic", you are allowed to solve them with any method you want.
(Medium Difficulty) Let \(ABC\) be a triangle and let \( \omega \) be its incircle. Denote by \(D_1\) and \(E_1\) the points where \(\omega \) is tangent to sides \(BC\) and \(AC\), respectively. Denote by \(D_2\) and \(E_2\) the points on sides BC and AC, respectively, such that \(CD_2 = BD_1\) and \(CE_2 = AE_1\), and denote by \(P\) the point of intersection of segments \(AD_2\) and \(BE_2\). Circle \(\omega\) intersects segment \(AD_2\) at two points, the closer of which to the vertex A is denoted by Q. Prove that \(AQ = D_2P\).
(Easy Difficulty) Let triangle \(ABC\) satisfy \(2BC = AB + AC\) and have incenter I and circumcircle \(\omega\). Let D be the intersection of \(AI\) and \(\omega\) (with A, D distinct). Prove that I is the midpoint of AD.
(Hard Difficulty) Let the incircle \( \omega \) of triangle \(ABC\) touch \(BC, CA,\) and \(AB\) at \(D , E\) and \(F\), respectively. Let \(Y_1 , Y_2, Z_1, Z_2 \) and \(M\) be the midpoints of \(BF , BD, CE, CD \) and \(BC\), respectively. Let the intersection of \(Y_1Y_2\) and \(Z_1Z_2\) be \(X\). Prove that \(MX \perp BC \).
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