20021201
8-3-5
Editing Figures
The following table describes the information that appears when you tap each icon, and
explains when each icon is available for selection.
Icon Icon Name
This icon appears when this 
is selected: 
Tapping this icon 
displays: 
Lockable
Coordinates
Yes
T
A single point Coordinates of the point
Distance/
length
Yes
t
Two points on one figure or two 
different figures, or a single line 
segment or a vector
Distance between two 
points, length of a line 
segment or vector
Slope
Yes
Single line, line segment, or 
vector 
Slope of the line, line 
segment or vector
Direction
Yes
Y
Single line, line segment, or 
vector 
Direction angle of the 
line (angle of inclination)
Equation
Yes
O
Any single line or line segment, 
vector, circle, arc, ellipse or any 
other figure (parabola, etc.) 
drawn by a function 
Function of the figure 
(using rectangular 
coordinates) 
Equation 
edit
No
5
Single parabola or any other 
figure drawn by a function 
Equation of the figure in 
the function editing 
dialog box.
Radius
Yes
]
Single circle or arc
Radius of circle or arc 
Circumference
Yes
3
Single circle or arc  Length of the 
circumference 
Perimeter
No
Single polygon Sum of the lengths of 
the sides 
Area
No
E
Any three points, a single 
circle, arc, ellipse, or polygon 
Area
Angle
Yes
Q
t
Two line segments  Angle and its 
supplement formed by 
the line segments 
Tangency
Yes
Two circles or arcs, or a line 
and circle
Whether two items are 
tangent
Congruence
Yes
Two line segments  Whether line segments 
are the same length 
Incidence
Yes
Point and a line, arc, circle or 
a vector
Whether a point is on 
the line/curve 
Point on 
curve
Point and a function, curve, or 
ellipse 
20030401