4/17/2024 0 Comments Rotations geometry rules![]() To fully describe a rotation, it is necessary to specify the angle of rotation, the direction, and the point it has been rotated about. To understand rotations, a good understanding of angles and rotational symmetry can be helpful. ![]() or anti-clockwise close anti-clockwise Travelling in the opposite direction to the hands on a clock. Rules Rules Rules D (x,y) (kx,ky) Scale factor k T a,b (x,y) (x+a,y+b) a moves left or right and b moves r x-axis (x,y) (x. Rotation by 90 ° about the origin: A rotation by 90 ° about the origin is shown. Some simple rotations can be performed easily in the coordinate plane using the rules below. Use a protractor to measure the specified angle counterclockwise. A dilation is enlarging or reducing an image by a scale factor k. The amount of rotation is called the angle of rotation and it is measured in degrees. A translation is taking a figure and sliding the figure to a new location. Rotations can be clockwise close clockwise Travelling in the same direction as the hands on a clock. A rotation is turning a figure about a point and a number of. This point can be inside the shape, a vertex close vertex The point at which two or more lines intersect (cross or overlap). Rotation turns a shape around a fixed point called the centre of rotation close centre of rotation A fixed point about which a shape is rotated. ![]() The result is a congruent close congruent Shapes that are the same shape and size, they are identical. is one of the four types of transformation close transformation A change in position or size, transformations include translations, reflections, rotations and enlargements.Ī rotation has a turning effect on a shape. A rotation close rotation A turning effect applied to a point or shape.
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