Elementary Geometry For College Students, 7e
7th Edition
ISBN:9781337614085
Author:Alexander, Daniel C.; Koeberlein, Geralyn M.
Publisher:Alexander, Daniel C.; Koeberlein, Geralyn M.
ChapterP: Preliminary Concepts
SectionP.CT: Test
Problem 1CT
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Transcribed Image Text:**Understanding Polygons: Why Some Shapes Do Not Qualify**
The given shape in the image is a closed figure that appears similar to a 'D'. Unlike polygons, this shape does not consist solely of straight lines.
**Question:**
The shape above is NOT a polygon because:
1. there are two segments.
2. the shape includes a curve.
3. there is one vertex.
4. the shape is closed.
**Explanation:**
To qualify as a polygon, a shape must adhere to specific criteria:
- It must be a closed figure.
- It must consist entirely of straight line segments.
- It must have vertices where line segments meet.
The shape in the image is excluded from being considered a polygon primarily because **the shape includes a curve** (option 2). Polygons cannot contain curves; they must be straight-edge figures.
Select the appropriate answer that clearly identifies why the given shape does not meet the definition of a polygon.
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