MCQ
Tick the correct answer in the following? In a regular polygon, each interior angle is thrice the exterior angle. The number os sides of the polygon is:
- A$6$
- ✓$8$
- C$10$
- D$12$
For a regular polygon with $n$ sides:
Each exterior angle $=\frac{ 360}{ \text{n}}$
Each interior angle $=180-\frac{360}{\text{n}}$
$\therefore180-\frac{360}{\text{n}}=3\Big(\frac{360}{\text{n}}\Big)$
$\Rightarrow180=4\Big(\frac{360}{\text{n}}\Big)$
$\Rightarrow\text{n}=\frac{4\times360}{180}=8$
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.