Exploring Rotation 1

Question 1
Without moving the point of reflection, rotate the shape (using the angle of rotation slider) so that point A is at (-3,1). What angle did you rotate by? Was it a clockwise or counter clockwise rotation?
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Question 2
Without moving the point of reflection, rotate the shape (using the angle of rotation slider) so that point A is at (-1,-3). What angle did you rotate by? Now draw a circle using the circle with center through point  tool. First click on the center of rotation which is the point (0,0) (also called the origin), then click point A on the preimage (brown). Don't forget to change back to the select   tool before moving the slider.
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As you rotate the figure (without moving the center of rotation) notice which points stay on the circle. Draw a new circle with center at the origin that passes through point B. Rotate the figure a bit. Do you see the pattern? Draw another circle with center at the origin and passing through a point on the preimage. Rotate the figure a bit. What is the pattern?
Question 3
As you rotate the figure (without moving the center of rotation) notice which points stay on the circle. Draw a new circle so with center at the origin that passes through point B. rotate the figure a bit. Do you see the pattern? Draw another circle with center at the origin and passing through a point on the preimage. Rotate the figure a bit. What is the pattern?
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Check your answers, redo any exercises that you missed, and then move on to Exploring Rotation 2.
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Information: Exploring Rotation 1