what is the angle of rotational symmetry for this regular polygon? a 240° b 90° c 120° d 36°
what is the angle of rotational symmetry for this regular polygon? a 240° b 90° c 120° d 36°
Answer
Explanation:
Step1: Recall the formula
The formula for the angle of rotational symmetry $\theta$ of a regular $n -$sided polygon is $\theta=\frac{360^{\circ}}{n}$, where $n$ is the number of sides.
Step2: Identify the number of sides
The given polygon is a triangle, so $n = 3$.
Step3: Calculate the angle
Substitute $n = 3$ into the formula: $\theta=\frac{360^{\circ}}{3}=120^{\circ}$.
Answer:
C. $120^{\circ}$