Skip to content / Đến nội dung
ThichHocToan.com

MathNet 2017-part-07 — 172 problems (EN–VI) Question 27

Math Olympiad Vault · MathNet 2017-part-07 — 172 problems (EN–VI)

Question 27

Let $A, B, C, D, E, F$ be 6 points on a circle in that order. Let $X$ be the intersection of $AD$ and $BE$, $Y$ be the intersection of $AD$ and $CF$, and $Z$ be the intersection of $CF$ and $BE$. $X$ lies on segments $BZ$ and $AY$ and $Y$ lies on segment $CZ$. Given that $AX = 3$, $BX = 2$, $CY = 4$, $DY = 10$, $EZ = 16$, and $FZ = 12$, find the perimeter of triangle $XYZ$.