![]() Counterclockwise will change 1 to 2, 2 to 3, 3 to 4 and 4 to 1. Rotate 180 counterclockwise (same as 180 clockwise) (x, y) (x. If you are working in 2D and only in the top view, roll the fingers of your right hand from the x axis to the y axis and your fingers will curl in a CCW direction. Answer (1 of 2): When triangle ABC starts in quadrant I and is rotated 270 degrees counterclockwise, what quadrant will contain the image Each rotation of 90 will change the quadrant by 1 quadrant. Rotate 90 counterclockwise (same as 270 clockwise) (x, y) (y, x). When using the rotate3d command it sure is helpful to understand RHR. The default counter-clockwise convention for AutoCAD is probably due to the fact that its intended users work on engineering projects. A compass rose does have its numbers arranged in a clockwise direction but sailors are working in a 2D world ( latitude and longitude are typically all that is needed to locate a ship with few exceptions such as the Titanic). ![]() This is taught in every engineering and physics course as the standard convention no matter which hemisphere you reside or the location of the steering wheel in your car. Specifies a 270-degree clockwise rotation without flipping. What side of the street do you drive on? What is the direction of spin for storm in your hemisphere?įor those of us that work in 3D we use the convention of right-hand-rule (RHR). Specifies a 180-degree clockwise rotation followed by a vertical flip. The whole world doesn't think the same on anything.
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