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Drawing Figures

(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.

(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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