Perpendicular line Point and perpendicular line

1. Moving Tools Point Tools Line Tools Move Drag or select objects (Esc) New point Click on drawing pad or line Line through two points Two points Intersect two objects Select two lines separately or click on intersection Segment between two points Two points Rotate around point Select rotation centre point, then drag object Segment with given length from point Point and segment length Midpoint or centre Two points, segment, circle or conic Construction Tools Ray through two points Two points Perpendicular line Point and perpendicular line Polygon Tools Vector between two points Two points Polygon Select all vertices, then click first point again Parallel line Point and parallel line Vector from point Starting point and vector Line bisector Two points or one segment Regular Polygon Two points and number of vertices Angle bisector Three points or two lines Measurement Tools Circle Tools Angle Three points or two lines Tangents Point, then circle, conic or function Circle with centre through point Centre point, point on circle Angle with given size Leg point, vertex & angle Locus Locus point first, then point on line There are a number of different circle functions (semi-circles, arcs, sectors). NB these are defined anti-clockwise. Distance or length Two points, segment, polygon or circle Area Polygon, circle or conic Transformation Tools Mirror object at line Object to mirror, then line of reflection Other Tools Slope Line Slider Click on drawing pad to specify position of slider Mirror object at point Object to mirror, then centre point Checkbox to show and hide objects Click on drawing pad to create a check box Presentational Tools Rotate object around point by angle Object to rotate, then centre point and angle Move drawing pad Drag drawing pad or one axis (Shift + Drag) Insert text Click drawing pad or point to create text Zoom in Click drawing pad to zoom in (Mouse wheel) Translate object by vector Object to translate, then vector Insert image Click drawing pad or point to set lower left corner of image Zoom out Dilate (enlarge) object from point by factor Object to dilate, then centre point and factor Show / hide object Select objects to hide, then change tool to apply changes Relation between two objects Two objects Show / hide label Select object to show/hide label Copy visual style Select object first, then click others to copy style Delete object Select object to delete GeoGebra Tools