Skip to content / Đến nội dung
ThichHocToan.com

2018 AMC 12A Question 18

AMC12 · 2018 AMC 12A

Question 18

Triangle $ABC$ with $AB = 50$ and $AC = 10$ has area $120.$ Let $D$ be the midpoint of $\overline{AB},$ and let $E$ be the midpoint of $\overline{AC}.$ The angle bisector of $\angle BAC$ intersects $\overline{DE}$ and $\overline{BC}$ at $F$ and $G,$ respectively. What is the area of quadrilateral $FDBG?$
  1. $60$
  2. $65$
  3. $70$
  4. $75$
  5. $80$