geometry
TRANSCRIPT
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GeometryBy: Dylan Heyl
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Geometry in HistoryEuclid, a famous mathematician was known as the “Father of Geometry” and wrote the famous book Elements about geometry.
Leonardo Da Vinci drew the Vitruvian Man which showed the symmetry of a man as shown in the picture below.
The ancient Egyptians made pyramids for their king’s tombs or for other reasons.
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2 Dimensional Shapes
Triangle
Circle
Square
Rectangle
Pentagon
Hexagon
Heptagon
Octagon
Nonagon
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3 Dimensional ShapesCube
Square pyramid
Rectangular prism
Triangular pyramid
Triangular prism
Cylinder
Cone
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Getting Out Of The Basics
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How To Find The Perimeter of a Shape
The way that you find the perimeter of a shape is you measure each side and add them up.
Perimeter is used to to find what is outside of a shape.
Example: 4 in. Answer: 4+4+4+4=16 in.
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How to Find the Area of a Square
The area of a shape is found by multiplying length x width
Area is used to find what is inside a shape
Example: 6in.
Length is the 6in. and width is the 4in. in the example 4in. Answer:(6)(4)=24
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How To Find The Area Of A TriangleThe area is found by doing 1/2 base x height
Example:
4in.
4in. Answer: 1/2 (4)(4)= 8
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How do you find the area of this shape?
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Cutting up shapes
Cut up the shape into many shapes like in the example.
Find the area of each shape then add them up.
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Almost Done!!!!!!!!!!!
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Volume
The volume is found by doing length x base x height.
Example:
Answer: (5)(4)(7)=140
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NetsNets are what you get when you unfold a 3 dimensional shape
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THE END
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SOURCES
• http://mrsbangle.weebly.com/geometry-cp.html
• https://sites.google.com/site/cstgeometry/home
• http://www.mathsisfun.com/shape.html
• http://ef004.k12.sd.us/ch12notes.htm
• http://www.korthalsaltes.com/model.php?name_en=rectangular%20prism