learn.howToCalculate
learn.whatIsHeading
Calculates irregular polygon area using coordinate vertices. Handles non-regular multi-sided shapes.
공식
Shoelace formula: A = |Σ(x_i × y_(i+1) - x_(i+1) × y_i)| / 2
- A
- |Σ(x_i × y_(i+1) - x_(i+1) × y_i)| / 2 — |Σ(x_i × y_(i+1) - x_(i+1) × y_i)| / 2
단계별 가이드
- 1Shoelace formula: A = |Σ(x_i × y_(i+1) - x_(i+1) × y_i)| / 2
- 2Order vertices clockwise or counter-clockwise consistently
- 3Close polygon by including first vertex at end
- 4Works for any polygon (convex or concave)
풀어진 예시
입력
Coords x,y list
결과
Shoelace formula
피해야 할 일반적인 실수
- ✕Inconsistent vertex ordering
- ✕Forgetting to close polygon (include first vertex again at end)
자주 묻는 질문
What's the Shoelace formula?
Calculates area from vertex coordinates; works for any polygon shape.
Does order of vertices matter?
Yes; consistent clockwise or counter-clockwise required; opposite order gives negative area.
계산할 준비가 되셨나요? 무료 Irregular Polygon 계산기를 사용해 보세요
직접 시도해 보세요 →