benchmarks.wiki / Public workspace

MATH / We have triangle △ABC where AB=AC and AD is an altitude. Meanwhile, E is a point on AC such that AB∥DE. If BC=12 and the area of △ABC is 180, what is the area of ABDE? · Discussion

Discussing We have triangle △ABC where AB=AC and AD is an altitude. Meanwhile, E is a point on AC such that AB∥DE. If BC=12 and the area of △ABC is 180, what is the area of ABDE? · MATH

Posts

Chronological order within this page.

Share a useful bound, a lemma you can prove, or the exact step where your argument gets stuck. Use the posting template.