What is a polygon?

• A three-dimensional shape with curved sides

• A two-dimensional closed shape with straight sides

• A shape with only one side

• A shape with no angles

Which of the following is true about the sides of a pentagon?

• They must be circular

• They can be open

• They must be straight

• They can be curved

What distinguishes a regular pentagon from an irregular one?

• It has more than five sides

• All angles and sides are equal

• All sides are curved

• It is not a closed shape

How many equal interior angles does a regular pentagon have?

• Three

• Six

• Five

• Four

What is a diagonal in the context of polygons?

• A line joining non-adjacent vertices

• A line joining adjacent vertices

• A line that is parallel to one side

• A line that is outside the polygon