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The following table describes the information that appears when you highlight each icon, and
explains when each icon is available for selection.
Icon Icon Name
This icon appears
when this is selected:
Highlighting this icon
displays:
Lockable
Coordinates A single point Coordinates of the point Yes
Distance/
length
Two points on one object
or two different objects,
or a single line segment
or a vector
Distance between two
points, length of a line
segment or vector
Yes
Slope
Single line, ray, line
segment, or vector
Slope of the line, ray,
line segment or vector
Yes
Equation
Any single line or line
segment, ray, circle,
semi circle, arc or
function graph
Function of the object
(using rectangular
coordinates)
No
Expression
A single expression
(“EXPR=” object)
Calculation formula No
Vector A single vector Vector components Yes
Radius
A single circle, semi
circle or arc
Radius of circle, semi
circle or arc
Yes
Circumference
A single circle, semi
circle or arc
Length of the
circumference
No*
3
Perimeter A single polygon
Sum of the lengths of the
sides
No
Area
Any three points, a
single circle, semi circle,
arc, or polygon
Area No*
3
Angle*
1
Two lines, line segments,
rays, or vectors*
2
in any
combination
Angle and its
supplement formed by
the two objects
Yes
Supplementary
Angle*
1
Tangency
Two circles or arcs, line
and circle, or a line and
arc
Whether the two items
are tangent
Yes
*
1
The angle and supplementary angle is always displayed as degrees.
*
2
When two vectors are selected, the angle that is no the angle formed mathematically by the
two vectors. It merely indicates the simple angle that would be formed if the vectors were
two lines.
*
3
The circle itself can be locked.
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