Subject: Mathematics, Geometry
Level: GCSE/Secondary
High school classes 10-11
Category: Geometrical Analysis
OS: Windows XP, Vista or 7
Media: Download
Geometry In Action
Categories
Transformations
Snapping
Online Documentation
Exporting
Geometry In Action is an interactive workbench for learning, analysing and
experimenting with 2D geometrical shapes and theorems. By using the software,
you can observe the visual and numerical changes to the properties of specific theorems,
and gain new perspectives and insights into geometry.
Geometry In Action enables you to add shapes or theorem diagrams
to the worksheet and make changes using the mouse or by typing
exact coordinates, lengths and angles. It will then automatically calculate
the relevant geometrical properties of each shape or theorem,
such as lengths, perimeters, heights, areas, angles, and coordinates.
Demo
![Geometry In Action Demo]()
Categories
Geometry In Action includes the following categories of shapes and theorems:
- Lines: segment, ray, parallel line, perpendicular line, tangent to a circle,
tangent to an ellipse, etc.
- Arcs: arc by two points, arc by three points, etc.
- Angles: angle between two lines, angles between parallel lines
and a transversal, unit circle, etc.
- Triangles: acute triangle, obtuse triangle, scalene triangle, right-angle
triangle, incentre theorem, orthocentre theorem, circumcentre theorem, similar triangles
theorem, etc.
- Polygons: regular polygon, rhombus, kite, trapezium, parallelogram,
etc.
- Circles: circle by two points, circle by three points, circle tangent
to a circle, circle tangent to a line, angle between two chords theorem, angles
opposite the same arc theorem, etc.
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Transformations
Geometrical transformations , such as rotation, can be applied
to any shape or theorem diagram in the worksheet.
- Translation
- Scaling
- Rotation
- Reflection
- Shear
You can transform shapes or theorem diagrams by using the mouse or by typing in
the exact parameters, such as the angle of rotation.
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Snapping
Snapping makes it easier to specify coordinates accurately when
you use the mouse. For example, if endpoint snapping is turned on, the cursor will
automatically move to the nearest line endpoint as shapes are drawn or changed.
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Online Documentation
The online help provides concise descriptions of all the available shapes and theorems,
and step-by-step instructions on how to use them.
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Exporting
You can export worksheets in standard image formats for use in other applications: Windows Bitmap,
Windows Metafile, JPEG, GIF, PNG, TIFF.
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