Download View the Workshop guide

Rotation
Dilation
Inversion
Construct the image of an object under a rotation. First
select the object, then the centre and an angle defined by
a number.
Construct the image of an object under an enlargement.
First select the object, then the centre of enlargement and
a scale factor defined by a number.
Construct the image of a point under inversion. Select
the point and the circle.
7. Macros
Initial objects
Final objects
Define a Macro
User-defined macro
This enables initial objects of a construction macro to be
defined.
Enables the final objects of a construction macro to be
defined.
Having defined the initial and final objects, this validates
the macro, names it, creates an icon and a help message.
Saving to disk is suggested. (If the name of an existing
macro is chosen, it can be replaced.)
This button is a new tool defined by a user-created
construction macro. It is labelled with the initial letter of
the macro - here N (Macintosh). The user can also create
the icon. In Windows, the default name is New
Construction.
8. Properties
Collinear
Parallel
Perpendicular
Equidistant
Member
Displays a message to confirm or contradict the
collinearity of three points. The text is updated according
to the relative positions of the three points.
Displays a message to confirm or contradict the parallel
direction of two lines, half-lines, segments or vectors.
The text is updated according to the relative directions of
the objects.
Displays a message as to whether two lines, half-lines,
segments or vectors are perpendicular. The message is
updated according to the relative positions of the objects.
Displays a message as to whether a point is equidistant
from two other points. The first point selected is the one
to be tested relative to two other points The message is
updated according to the relative positions of the objects.
Displays a message to confirm or contradict whether a
point belongs to an object. The message is updated
according to the relative positions of the objects.
31