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Program for
Rotating a Figure
Description
Y
0
Graphing of rotation of any geometric figure by
Example
To rotate by 30 the triangle defined by points A (2, 0.5), B (6, 0.5), and C (5, 1.5)
Notes
• Use the cursor keys to move the pointer around the display.
• To interrupt program execution, press A while the graphic screen is on the display.
• The triangle cannot be drawn if the result of the coordinate transformation operation exceeds
View Window parameters.
Preparation and operation
• Store the program written on the next page.
• Execute the program as shown below.
A
x
1
B
y
1
C
x
2
D
y
2
E
x
3
F
y
3
G
x'
1
PROGRAM SHEET
C(x
)
y
3,
3
A(x
)
y
1,
1
H
y'
I
x'
J
y'
K
x'
L
y'
M
N
B(x
)
y
2,
2
X
degrees.
O
1
P
2
Q
2
R
3
S
3
T
U
No.
5
Formula for coordinate transforma-
tion:
x
y
x'
y'
(
,
)
(
,
)
x'
x
y
=
cos
–
sin
y'
x
y
=
sin
+
cos
V
W
X
Y
Z
165