Angles in a Polygon

What students will learn

• Define a polygon and distinguish between regular and irregular polygons.
• State the formula for the sum of interior angles of an n-sided polygon.
• Calculate the sum of interior angles for given polygons.
• Explain the relationship between interior and exterior angles.
• Solve problems involving the exterior angles of polygons using the 360° sum property.

Sample quiz questions

1. What is the sum of the interior angles of a triangle?

   • A. 90°
   • B. 180°
   • C. 270°
   • D. 360°

2. The sum of the interior angles of a quadrilateral is:

   • A. 180°
   • B. 360°
   • C. 540°
   • D. 720°

Answers and explanations come with the full quiz when you sign up.