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Geometry 2
Prefixes and Suffixes
The prefix can provide the number of sides, and the suffix can provide the dimension, such as 2D (-gon) or 3D (-hedron).
1
mono
2
di
3
tri
4
tetra
5
penta
6
hexa
7
hepta
8
octa
9
nona
10
deca
12
dodeca
20
icosa
2D Shapes
Pentagon
Hexagon
Octagon
Decagon

Convex Kite

Concave Kite
3D Shapes

Square Pyramid

Sphere

Dimensions, Axis, Coordinates
1D, 1 Dimension: Along a line, the 1 axis, has 1 number of coordinates. (x)
2D, 2 Dimensions: Using 2 axis or lines, usually called x and y, has two numbers for coordinates. (x, y)
3D, 3 Dimensions: Using 3 axis or lines, usually x, y, z. Use 3 coordinate numbers. (x, y, z)
That's great, but who cares? Here are real world examples:
Maps and location services require different coordinate systems and knowledge.


Milling machine operators require knowledge of part geometry and machine coordinate systems.


Architects can use geometry artistically too.




Shapes and Patterns in Nature
When Geometric shapes match nature, is it coincidence?





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