Polygons (Grade 12 NSC Matric Mathematics): Quizzes

A flat closed figure of 3+ straight sides

$\frac{1}{2} \times \text{base} \times \text{height}$

perpendicular

$\text{base} \times \text{height}$

$\frac{1}{2} \times \text{diagonal}_1 \times \text{diagonal}_2$

$\text{side}^2$

$\frac{1}{2} \times (\text{sum of parallel sides}) \times \text{height}$

$\frac{1}{2} \times \text{diagonal}_1 \times \text{diagonal}_2$

the slanted side length

Perpendicularly at right angles