Question

If the exterior angle of a regular polygon is ${70}^o$, then what would be the measure of interior angle ?

• A. ${120}^o$
• B. ${80}^o$
• C. ${90}^o$
• D. ${110}^o$

Answer 1

Answer: (D)

${110}^o$

As the angle sum property both the angles make a linear pair. Each linear pair adds to ${180}^o$.
${180}^o-{70}^o={110}^o$
Therefore, D is the correct answer.