Geometry
Geometry is all about shapes and their properties.
If you like playing with objects, or like drawing, then geometry is for you!
Geometry can be divided into:
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Plane Geometry is about flat shapes like lines, circles and triangles ... shapes that can be drawn on a piece of paper |
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Solid Geometry is about three dimensional objects like cubes, prisms and pyramids. |
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Hint: Try drawing some of the shapes and angles as you learn ... it helps. |
Plane Geometry
Plane Geometry is all about shapes on a flat surface (like on an endless piece of paper).
General
Shapes
Pythagoras
Polygons
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A Polygon is a 2-dimensional shape made of straight lines. Triangles and Rectangles are polygons. Here are some more: |
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Diagonals of Polygons (coming soon) |
Symbols
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There are many special symbols used in Geometry. Here is a short reference for you: Geometric Symbols |
Congruent and Similar
Angles
Types of Angles
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The angle in a semicircle (coming soon) |
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Angles in the same segment (coming soon) |
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Angle at the center theorem (coming soon) |
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Cyclic quadrilaterals (coming soon) |
Conic Sections
Trigonometry
Solid Geometry
Solid Geometry is the geometry of three-dimensional space - the kind of space we live in ...
Let us start with some of the simplest shapes:
Solids come in two types "Polyhedra" and "Non-Polyhedra":
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Polyhedra :
(they must have flat faces) |
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Non-Polyhedra:
(if any surface is not flat) |
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