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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: Plane Geometry is about flat shapes like lines, circles and triangles ... shapes that can be drawn on a piece of paper Solid Geometry is about three dimensional objects like cubes, prisms, cylinders and spheres. Hint: Try drawing some of the shapes and angles as you learn ... it helps. Point, Line, Plane and SolidA Point has no dimensions, only position A Line is one-dimensional A Plane is two dimensional (2D) A Solid is three-dimensional (3D) Why?Why do we do Geometry? To discover patterns, find areas, volumes, lengths and angles, and better understand the world around us. Plane GeometryPlane Geometry is all about shapes on a flat surface (like on an endless piece of paper).
Here are some more: Pentagon Pentagram Hexagon The Circle Circle Theorems (Advanced Topic) SymbolsThere are many special symbols used in Geometry. Here is a short reference for you: Geometric Symbols Congruent and Similar Angles Types of Angles Acute AnglesRight AnglesObtuse AnglesStraight AngleReflex AnglesFull Rotation Using Drafting Tools
Transformations and SymmetryTransformations: Symmetry: Coordinates |
More Advanced Topics in Plane GeometryPythagoras
Conic Sections Trigonometry Trigonometry is a special subject of its own, so you might like to visit: Solid GeometrySolid Geometry is the geometry of three-dimensional space - the kind of space we live in ... ... let us start with some of the simplest shapes: Common 3D Shapes Polyhedra and Non-PolyhedraThere are two main types of solids, "Polyhedra", and "Non-Polyhedra": Polyhedra : (they must have flat faces) Cubes and Cuboids (Volume of a Cuboid) Platonic Solids Prisms Pyramids Non-Polyhedra: (if any surface is not flat)SphereTorus CylinderCone |