PROPERTIES OF ROTATIONS WORKSHEET

Problem 1 :

The triangle XYZ has the following vertices X(0, 0), Y(2, 0) and Z(2, 4). Rotate the triangle XYZ 90° counterclockwise about the origin and determine whether image and pre-image of the rotated object satisfy the properties.

Problem 2 :

The triangle XYZ has the following vertices X(0, 0), Y(2, 0) and Z(2, 4). Rotate the triangle XYZ 90° clockwise about the origin and determine whether image and pre-image of the rotated object satisfy the properties.

1. Answer :

Step 1 :

Trace triangle xyz and the x- and y-axes onto a piece of paper.

Step 2 :

Rotate your triangle 90° counterclockwise about the origin. The side of the triangle that lies along the x-axis should now lie along the y-axis.

Step 3 :

Sketch the image of the rotation. Label the images of points X, Y, and Z as X', Y', and Z'.

Step 4 :

The rotation done above maps each side to its corresponding side and each angle to its corresponding angle. And also, the rotation preserves lengths of segments and measures of angles. So, the rotation done above satisfies the properties.

2. Answer :

Step 1 :

Trace triangle xyz and the x- and y-axes onto a piece of paper.

Step 2 :

Rotate your triangle 90° clockwise about the origin. The side of the triangle that lies along the x-axis should now lie along the y-axis.

Step 3 :

Sketch the image of the rotation. Label the images of points X, Y, and Z as X", Y", and Z".

Step 4 :

The rotation done above maps each side to its corresponding side and each angle to its corresponding angle. And also, the rotation preserves lengths of segments and measures of angles. So, the rotation done above satisfies the properties.

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