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u To edit an animation
Note:
The steps below continue from the procedure under "To trace a locus of
points".
1. While the animation you want to edit is on the display, tap [Edit], [Animate],
and then [Edit Animations].
• This displays the animation editing window in the lower window. The upper
window contains the animation that we just completed in "To trace a locus
of points".
2. Edit the animation following the procedure below.
Steps:
This setting specifies how many steps point A takes to move along side CD.
The initial default value is 20, which can be changed to value from 2 to 100.
Animations:
The "A" under "Animations" indicates that point A is the point moved by the
animation. When you are building multiple animations, a list of all applicable points appears here.
Tapping [Remove] deletes the applicable animation.
t
t
"
0" and "
1" specify the range of movement of point A on side CD. The initial default values are
t
1 = 1. During animation, the length of CD is considered to be one unit. The default values specify that
movement of point A is from start point C (point where length equals 0) up to end point D (point where length
equals 1).
Changing the value of
Changing the value of
distance equivalent to the length of side CD) and ending with point D.
Traces:
This item shows the specified trace point. Tapping [Remove] cancels the trace point setting.
3. While the lower window is active, tap C to close the animation editing window.
u To view an animation table
Note:
The steps below continue from the procedure under "To trace a locus of
points".
1. Tap line segment AB, which connects point A with apex B, to select it.
2. Tap u on the toolbar to display the measurement box.
• This displays the measurement of line segment AB in the measurement
box.
3. Tap # next to the measurement box.
• This displays a table showing the length of line segment AB for each
animation step in the bottom half of the screen.
t
0 to 0.5, for example, causes point A to move from the middle of side CD to point D.
t
0 to −1, causes point A to begin at a point outside side CD (in this case, at a point a
Chapter 8: Geometry Application 176
t
0 = 0 and
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