Please wait till the applet is fully loaded and two preset points appear!
Further instructions are given below.
This page shows how to realize some basic ideas of
FeliX within
Geogebra.
Smooth
Solve by optimizing
The text field can be filled with equations or inequations in the coordinates of all points in the construction.
If there is a point A then its coordinates are denoted by Ax and Ay. Several equations can be combined by using ;.
Segment names can be used to denote their length.
Appending ang to the the name of a segment gives the angles in radians with respect to the x-axis.
For circles the name denotes the radius.
An expressions can be minimized by enclosing them in mini(expr).
See examples below.
Ideas for things to try:
Ax=Ay
Ax=Bx
Ax<Bx
Ay=0;By=1;2*Ax+3*Bx=10
Create another point C and then:
2*Cx=Ax+Bx;2*Cy=Ay+By
Create a segment f between some points:
f=3; fang=pi/4
(Ax-Bx)^2+(Ay-By)^2<4
or
(Ax-Bx)^2+(Ay-By)^2>4
Ay=0;By=1;Ax=abs(Bx)
or
Ay=0;By=1;Ax=sqrt(Bx)
Some notes and caveats:
Equations and inequations may be either
entered in the text field in the geometry window or
in the object list (below point B in the intial configuration).
Fixed points are respected during dragging. However, if the fixation status of a point
has been changed after the equation(s) have been defined, it will be ignored and
this will lead to inconsistent behaviour. To avoid this, simply press enter in the text field again.
The checkbox below the construction allows to damp movement of point in case they move too quichly around.
All construction tools can be used, however, constraints can only be set for points,
segments and circles, when defined by points.