A rotation is a transformation that is called a 'turn.' Rotations in 8th grade will normally turn around the origin (0,0). You can rotate objects clockwise (to the right) or counterclockwise (to the left). Rotations of 180 degrees clockwise are the same as rotations of 180 degrees counterclockwise.
Make sure to click on the box next to Rotate Mona. Leave the center of rotation (point A) at the origin. Note the slider under the angle box. Play with the slider some. Positive rotations are counterclockwise and negative rotations are clockwise.
1) Where is the point (2,-4) after a rotation of 90 degrees CCW?[br]2) Where is the point (5,-4) after a rotation of 90 degrees CCW?[br]3) Write a rotation of 90 degrees CCW as a function.[br]Answer below.
1) Where is the point (2,-4) after a rotation of 180 degrees CCW?[br]2) Where is the point (5,-4) after a rotation of 180 degrees CCW?[br]3) Write a rotation of 180 degrees CCW as a function.[br]Answer below.
1) Where is the point (2,-4) after a rotation of 270 degrees CCW?[br]2) Where is the point (5,-4) after a rotation of 270 degrees CCW?[br]3) Write a rotation of 270 degrees CCW as a function.
1) Where is the point (2,-4) after a rotation of 90 degrees CW?[br]2) Where is the point (5,-4) after a rotation of 90 degrees CW?[br]3) Write a rotation of 90 degrees CW as a function.[br]4) Compare the answers to a 90 degrees CW rotation to the answers to a 270 degrees CCW rotation. What do you notice?[br]Answer below.
Where would the new points be if A(2,4) V(4,1) E(-3,5) R(4,-2) Y(0,-3) after a rotation 90 degrees counterclockwise?[br]Answer below. Use A', V', E', R' and Y' to indicate the new points.
Question 1 Answer _________[br]Question 2 Answer _________[br]Question 3 Answer _________[br]Answer below.