Areas of standard and composite shapes

What this note covers

1. Choose the area model
2. Triangles, trapezia and regular polygons
3. Circles, sectors and annuli
4. Decompose and subtract composite regions
5. Convert area and estimate materials
6. Interpret area in an examined response
7. Worked plaza: a regular hexagon around a circular fountain
8. Worked courtyard: annular sector joined to a trapezoid

8 sections · 10 key terms & formulas · 6 common mistakes