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:### Geometry Exercise: Understanding the Hierarchy of Shapes
**Problem 2:**
Create a Venn diagram to show the hierarchy of triangles, quadrilaterals, isosceles triangles, and polygons.
For this exercise, you are required to draw a Venn diagram that represents the relationship and classification among different types of shapes. Here's how you can categorize them:
- **Polygons:** A broad category encompassing all closed shapes with three or more sides. Both triangles and quadrilaterals fall under this category.
- **Triangles:** A subcategory of polygons, specifically shapes with three sides.
- **Isosceles Triangles:** A specific type of triangle where at least two sides are of equal length.
- **Quadrilaterals:** Another subcategory of polygons, specifically shapes with four sides.
These categories will help you create the hierarchy correctly. Now, let’s proceed with the Venn diagram:
1. **Draw a large rectangle or circle:** Label this as "Polygons."
2. **Inside the polygon area, draw another enclosed shape:** Label this as "Triangles."
3. **Within the triangle area, draw another enclosed shape:** Label this as "Isosceles Triangles."
4. **Separate from the triangles, but still inside the polygon shape, draw another enclosed shape:** Label this as "Quadrilaterals."
### Explanation of the Venn Diagram:
- **Polygons** will be the outermost set, indicating that all shapes considered are polygons.
- **Triangles** will be inside the polygon set, indicating that all triangles are polygons.
- **Isosceles Triangles** will be inside the triangle set, indicating that all isosceles triangles are a subset of triangles.
- **Quadrilaterals** will also be inside the polygon set but separate from the triangles, indicating that all quadrilaterals are polygons, but not triangles.
_By understanding this hierarchy, students can grasp the classification and relationships between various geometric shapes._
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