If you like drawing, then geometry is for you!
Plane Geometry is about flat shapes like lines, circles and triangles ... shapes that can be drawn on a piece of paper
|Hint: Try drawing some of the shapes and angles as you learn ... it helps.|
Point, Line, Plane and Solid
Plane Geometry is all about shapes on a flat surface (like on an endless piece of paper).
- Quadrilaterals (Rhombus, Parallelogram, etc)
- Rectangle, Rhombus, Square, Parallelogram, Trapezoid and Kite
- Interactive Quadrilaterals
- Shapes Freeplay
A Polygon is a 2-dimensional shape made of straight lines. Triangles and Rectangles are polygons.
Here are some more:
- Circle Sector and Segment
- Circle Area by Sectors
- Activity: Dropping a Coin onto a Grid
Circle Theorems (Advanced Topic)
There are many special symbols used in Geometry. Here is a short reference for you:
Congruent and Similar
Using Drafting Tools
Transformations and Symmetry
More Advanced Topics in Plane Geometry
Trigonometry is a special subject of its own, so you might like to visit: