![]() To rotate a figure by an angle measure other than these three, you must use the process from the Investigation. While we can rotate any image any amount of degrees, only 90, 180 and 270 have special rules. Later, we will discuss the rotation of 90, 180 and 270 degrees, but all those rotations were positive angles and their direction was anti-clockwise. Rotation of 270 : If (x, y) is rotated 270 around the origin, then the image will be (y, x). Identify whether or not a shape can be mapped onto itself using rotational symmetry. The -90 degree rotation is a rule that states that if a point or figure is rotated at 90 degrees in a clockwise direction, then we call it -90 degrees rotation. Solution: Here, triangle is rotated 270° clockwise.Describe the rotational transformation that maps after two successive reflections over intersecting lines.Describe and graph rotational symmetry.In the video that follows, you’ll look at how to: Which rule describes rotating 270 degrees counterclockwise How do you rotate a figure 90 degrees counterclockwise about the origin Point (-1, -3) is mapped onto X when rotated 180 degrees counterclockwise about the origin. The order of rotations is the number of times we can turn the object to create symmetry, and the magnitude of rotations is the angle in degree for each turn, as nicely stated by Math Bits Notebook. Triangle A is rotated 270 degrees counterclockwise with the origin as the center of rotation to create a new figure. And when describing rotational symmetry, it is always helpful to identify the order of rotations and the magnitude of rotations. ![]() ![]() This means that if we turn an object 180° or less, the new image will look the same as the original preimage. Lastly, a figure in a plane has rotational symmetry if the figure can be mapped onto itself by a rotation of 180° or less. A 180-degree rotation transforms a point or figure so that they are horizontally flipped. ![]()
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