Figures in 3 Dimensions

1 / 11

# Figures in 3 Dimensions - PowerPoint PPT Presentation

Figures in 3 Dimensions. Platonic Solids. 20 equilateral triangles. Other Polyhedrons. Octagonal prism Square antiprism Dodecahedron (regular) Cuboctahedron Stellated dodecahedron Isosidodecahedron ( quasiregular ) Elongated pentagonal cupola. Definitions. 2-D figure Closed

I am the owner, or an agent authorized to act on behalf of the owner, of the copyrighted work described.

## PowerPoint Slideshow about 'Figures in 3 Dimensions' - althea

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.

- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -
Presentation Transcript

Platonic Solids

20 equilateral triangles

Other Polyhedrons

Octagonal prism

Square antiprism

Dodecahedron (regular)

Cuboctahedron

Stellated dodecahedron

Isosidodecahedron (quasiregular)

Elongated pentagonal cupola

Definitions
• 2-D figure
• Closed
• All lines are straight

Polygon

Polyhedron

• 3-D figure
• Closed
• All faces are flat with straight edges
Classification
• How many faces does it have?
• How many vertices does it have?
• How many edges does each face have? (Can there be more than one type of polygon for a face?)
• Are there any concavity?
• Does it create a recognizable shape?
Classification

1. Classify at least sixteen different 3-D shapes

2. For each one, include its the name and a best-effort drawing

3. Include at least 4 levels of classification (vertical)

Animals

Mammals

Reptiles

Insects

Land

Aquatic

Classification not complete!!!

Dog

Cat

Whale

Classification

4. Include at least 6 different categories (horizontal)

5. For each category, also write the criteria that a shape must meet to fit that category

Animals

Mammals:

Fur, warm-blooded

Reptiles:

No fur, cold-blooded

Insects:

Six legs, exoskeleton

Rodents:

Use teeth to gnaw, wide field of vision

Carnivores:

Large, predators, eat other animals

Aquatic:

Live underwater, feed on plankton and/or fish

Classification

Classify at least sixteen different 3-D shapes

For each one, include its the name and a best-effort drawing

Include at least 4 levels of classification (vertical)

Include at least 6 different categories (horizontal)

For each category, also write the criteria that a shape must meet to fit that category

Drawing

Cube

Sphere