Get the **Cardioide** by tracing
a circle! This cardioide is the locus of a circle which center
moves around another circle.

This **Cardioide** (animate
when you open the file) results as the trace of a point in a circle
which is sliding around a given circle

**A Parabola** - Choose three
points that are noncolinear. AB will be the directrix (make A
and B stand quite apart) and C the focus. Move C from one side
of the line AB to the other to see what happens!

**An Elipse or a Hyperbola****
**- A and C are the focus. If you choose AC<AB you get an
Elipse; If you choose AC>AB you get a Hyperbola. Move C around
in your sketch to check it out!

** Centers of the Triangle**
- Click in each of the following for the:

**The Incenter**: I

**The Centroid**: G

The **Chig** to get all of
the centers.

** Special triangles**
- Click in the following for the:

**Pedal Triangle****
**- Is constructed in relation to the Pedal Point P.

** Special Circles**
- Click in the following for the:

**Excircles**** - **The
point T and U are the extremes of an auxiliary segment; A, B and
C are the vertices of the triangle for which the excircles are
constructed.

__Notes:__

The points one has to select before running the scripts are the three vertices.

Move the relative position of the vertices if the picture does show what was promised.

To draw a **pentagran** inscribed
in a given circle.

To **trissect** a segment

To draw the **circles tangent**
to two given circles and at a given point in one of the circles.