In 2D and 3D sketches, enter exact coordinates for sketch geometry as you sketch.
Reset to Origin moves the triad to the origin point of the sketch (0,0,0).
Precise Redefine enters a point relative to the coordinate origin.
Precise Delta enters a point offset from the triad location. Delta is always relative to the last entered point.
Specify a coordinate by (x, y) point relative to the origin. Specify a coordinate by x coordinate and an angle from the positive x axis. Specify a coordinate by y coordinate and an angle from the positive x axis. Specify a coordinate by a distance and an angle from the positive x axis. 
The 3D coordinate triad shows X, Y, and Z planes. The red arrow indicates X, the green arrow is Y, and the blue arrow is Z. Click any part of the triad to set movement. The triad is first positioned at 0,0,0 but thereafter remembers its location. 
Reset to Origin moves the triad to the origin point of the sketch (0,0,0). 

Precise Redefine enters a point relative to the coordinate origin. 

Precise Delta enters a point offset from the triad location. Delta is always relative to the last entered point. 

Indicates a point location by entering X, Y, and Z coordinates. 