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Using the Measurement Box

uTo unlock all objects on the screen

Perform the following operation: K(Option) – 4:Clr Constraint.

This unlocks all locked settings.

Note

The above operation unlocks both measurements you locked manually, as well as objects that are locked automatically whenever they are drawn. For example, the above operation unlocks all of the following lock conditions.

The lock that is applied when you draw a rectangle that keeps its opposing sides equal (opposing side congruence lock)

The lock that is applied when you draw an isosceles triangle (ABC) that keeps side AB and side BC equal (side AB and side BC congruence lock)

The lock that is applied when you draw an infi nite line that keeps the line passing through two points (point A and point B) (infi nite line and point A, B incidence lock)

The relationship between the line segment and perpendicular bisector that is formed when you select a line segment and perform the following operation: 4(Construct) – 1:Perp Bisector

The (locked) similarities of objects when you select the objects and perform the following operation: 5(Transform) – 5:Dilation

Pasting Measurements into a Screen Image

You can use the procedures in this section to paste object measurements into the image on the screen. The measurements change dynamically as you manipulate the object.

The following types of measurements can be pasted into a screen image: coordinates, distance/length, slope, equation, vector components, radius, circumference, perimeter, area, angle, supplementary angle.

uTo paste a measurement into a screen image

Example: To paste an internal angle measurement into a screen image

1. Draw a triangle and select two of its sides.

2. Press J to display the measurement box.

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