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(5) Select the triangle and drag it to the cursor location in the Main application work area.
• This inputs a matrix that shows the coordinates of the triangle’s three vertices into the
work area.
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Drawing Figures
(6) Here, try multiplying by the matrix [[–1, 0], [0, 1]] to transform the matrix obtained above
to a form that is symmetrical about the
y
-axis. Execute the calculation as shown in the
screenshot below.
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