Angle Command

From GeoGebraWiki

Jump to: navigation, search

The Angle command has nine variants:

With "Options" "Angle unit" "Degree", angle is between 0 and 360°
With "Options" "Angle unit" "Radians", angle is between 0 and 2pi

Angle[vector v1, vector v2] - Creates an Angle between two vectors v1 and v2

Note: The angle is marked by a sector and given a name α for example.

Angle - Vectors


Angle[line g, line h] - Angle between the direction vectors of two lines (b and a gives angle α) or (d and c gives angle β) as shown

Note: The angle is marked by a sector and given a name α for example.

Angle - Lines


Angle[point B, point A, point C] - Angle enclosed by AB and AC .

Notes:

  • Point A is the apex.
  • The angle is marked by a sector and given a name α for example.

Three Points


Angle[point B, point A, angle alpha] - Angle of size α drawn from point B with vertex A.

Notes:

  • Point Rotate[B, alpha, A] is created too.
  • The angle is marked by a sector and given a name α for example.

Angle - Two Points


Angle[c] - Angle of twist of a conic section c's principle axis (see command Axes)

Note: Angle α is returned in the algebra window but not shown on the model.

Angle - Conics


Angle[vector v] - Angle between x-axis and vector v

Note: The angle is marked by a sector and given a name α for example.

X-Axis and a vector


Angle[point A] - Angle between x-axis and position vector of point A

Note: The angle is marked by a sector and given a name α for example.

Angle X-Axis and a Point


Angle[number n] - Converts a number n into an angle

Angle to a number Example


Angle[polygon poly] - All inner angles of a polygon

Notes:

  • The angle of each vertex is marked by a sector and given a name for example α.
  • Does not appear to work properly if a slider is used to define the polygon.

Inner angles of a polygon Example


Tools associated with this command:

Image:mode_angle_32.gif - Angle between

Image:mode_anglefixed_32.gif - Angle with given size



Go to:

Mode Descriptions

Command Descriptions

GeoGebra User's Guide

Personal tools