Difference between revisions of "Relation Command"
From GeoGebra Manual
(New features of the Relation command) |
m |
||
Line 1: | Line 1: | ||
<noinclude>{{Manual Page|version=5.0}}</noinclude>{{command|logical}} | <noinclude>{{Manual Page|version=5.0}}</noinclude>{{command|logical}} | ||
+ | ; Relation[ <List> ]: Shows a message box that gives you information about the relation between two or more (up to 4) objects. | ||
; Relation[ <Object>, <Object> ]: Shows a message box that gives you information about the relation between two objects. | ; Relation[ <Object>, <Object> ]: Shows a message box that gives you information about the relation between two objects. | ||
Line 5: | Line 6: | ||
* two lines are perpendicular | * two lines are perpendicular | ||
* two lines are parallel | * two lines are parallel | ||
− | * two objects are equal | + | * two (or more) objects are equal |
* a point lies on a line or conic | * a point lies on a line or conic | ||
* a line is tangent or a passing line to a conic | * a line is tangent or a passing line to a conic | ||
* three points are collinear | * three points are collinear | ||
− | * three lines are concurrent | + | * three lines are concurrent (or parallel) |
− | * four points are concyclic. | + | * four points are concyclic (or collinear). |
Some of these checks can also be performed symbolically. If GeoGebra supports symbolic check for a certain property, the "More" button appears. By clicking it, GeoGebra may provide more information whether the property is true in general (eventually under certain conditions). | Some of these checks can also be performed symbolically. If GeoGebra supports symbolic check for a certain property, the "More" button appears. By clicking it, GeoGebra may provide more information whether the property is true in general (eventually under certain conditions). | ||
{{Note| See also [[Relation Tool|Relation]] tool. }} | {{Note| See also [[Relation Tool|Relation]] tool. }} |
Revision as of 23:55, 1 January 2017
- Relation[ <List> ]
- Shows a message box that gives you information about the relation between two or more (up to 4) objects.
- Relation[ <Object>, <Object> ]
- Shows a message box that gives you information about the relation between two objects.
This command allows you to find out whether
- two lines are perpendicular
- two lines are parallel
- two (or more) objects are equal
- a point lies on a line or conic
- a line is tangent or a passing line to a conic
- three points are collinear
- three lines are concurrent (or parallel)
- four points are concyclic (or collinear).
Some of these checks can also be performed symbolically. If GeoGebra supports symbolic check for a certain property, the "More" button appears. By clicking it, GeoGebra may provide more information whether the property is true in general (eventually under certain conditions).
Note: See also Relation tool.