Angles in Polygons Practice — Grade 4 amc_math

Lesson 3: Angles in Polygons — Practice Questions

1. A standard school crossing sign has five sides. This shape is known as a pentagon. A polygon with six sides is called a ___.
2. A certain polygon is referred to as a quadrilateral. How many sides does this polygon have?
- A. 3
- B. 4
- C. 5
- D. 6
3. The general name for a polygon with $n$ sides is an $n$-gon. Following this rule, a polygon with 10 sides is called a ___-gon.
4. Which of the following geometric shapes is defined as a polygon with three sides?
- A. Triangle
- B. Quadrilateral
- C. Pentagon
- D. Hexagon
5. A garden plot is designed in the shape of a hexagon. How many line segments form the border of the garden plot? ___
6. What is the measure of one interior angle in a regular decagon (10-sided polygon)?
- A. 120°
- B. 135°
- C. 144°
- D. 1440°
7. An interior angle of a regular polygon measures 150°. How many sides does the polygon have? \ ___
8. Which of the following regular polygons has the largest interior angle measure?
- A. Regular pentagon (5 sides)
- B. Regular octagon (8 sides)
- C. Regular decagon (10 sides)
- D. Regular dodecagon (12 sides)
9. Calculate the measure in degrees of an interior angle of a regular 20-sided polygon (icosagon). \ ___