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Specific operation methods for constructing multiple coordinate systems using geometric sketchpad

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2024-04-17 12:16:061115browse

Establish a coordinate system and select the [Draw]-[Hide Grid] command to hide the grid.

Specific operation methods for constructing multiple coordinate systems using geometric sketchpad

Select [Draw] - [Draw Point] command, the [Draw Point] dialog box will pop up, select the [Rectangular Coordinate System] radio button, and enter the coordinates (2, 3), Press the [Draw] button to draw point (2, 3). Then enter the coordinates (3, 1) and press the [Draw] button to draw the point (3, 1). Press the [Finish] button to exit.

Specific operation methods for constructing multiple coordinate systems using geometric sketchpad

Select point (2, 3), and then select the [Draw]-[Define Origin] command. A dialog box will pop up asking whether to build a new coordinate system. Of course the answer is [Yes] . So a new coordinate system was established (referred to as the new system to distinguish it from the old system).

Specific operation methods for constructing multiple coordinate systems using geometric sketchpad

Select the x-axis (y-axis, origin or unit point) of the new system and select the [Drawing] - [Mark Coordinate System] command.

Specific operation methods for constructing multiple coordinate systems using geometric sketchpad

Select the point (3, 1) in the old system, select the [Measure]-[Coordinates] command, and find that the measured coordinates are not (3, 1), but ( 1,-2).

Specific operation methods for constructing multiple coordinate systems using geometric sketchpad

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