Answer :
The correct answer is:
D) when the plane makes a narrow angle with the base.
Explanation:
If a cross section of a prism is taken parallel to the base, the cross section will be the same shape as the base. In this case, it will be a 9 sided polygon.
If a cross section of a prism is taken perpendicular to the base, the cross section will be a rectangle, no matter how many edges the cross section goes through.
The only way to get a cross section with more sides than the original figure is to take a slant cross section, or one with an angle other than 90° or 180° to the base. This makes D our only option.
D) when the plane makes a narrow angle with the base.
Explanation:
If a cross section of a prism is taken parallel to the base, the cross section will be the same shape as the base. In this case, it will be a 9 sided polygon.
If a cross section of a prism is taken perpendicular to the base, the cross section will be a rectangle, no matter how many edges the cross section goes through.
The only way to get a cross section with more sides than the original figure is to take a slant cross section, or one with an angle other than 90° or 180° to the base. This makes D our only option.
D.when the plane makes a narrow angle with the base