Here you can configure application settings: 

There will be 2 lines on the screen. One line is fixed (model). The line with the blue circle (end) is movable.

Your task is to use the Drag and drop action to rotate the line with the blue circle so that it is vertical to the fixed line. In other words, you need to create 2 vertical lines on the screen.

To activate Drag and Drop you need to click exactly on the blue circle. Then start rotating (drag) the blue circle in the desired direction.

As this is a demonstration task, the blue dot is always placed in the optimal position so that the two lines are vertical.

When you are done, click the button at the bottom right of the screen to display the next task.

To return to the previous task, click the button at the bottom left of the screen.

Results by items:

Descriptive statistics

The error is shown as a deviation from the maximum error in percent. The error percentage is shown in red. Total range (for error): 0% -100%.

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