Geometry – ROTATIONS Notes/Examples
Geometry – ROTATIONS Notes/Examples Name ____________________________
I. Definition:
Rotation:
a Transformation in which the preimage is “turned” or “spins” around a fixed point
The fixed point is called the __Center_____. A rotation is an __Isometry_________________.
**Rotations can be clockwise or counterclockwise.**
II. Determine whether the figure has rotational symmetry about the center point.
If so, describe the symmetry.
a) b) c)
a) 90 degrees b) __72 degrees c) 60 degrees___
**360 degrees **360 degrees **360 degrees
divided by 4** divided by 5** divided by 6**
(4 equal sides) (5 points on the star) (6 equal sides)
III. Given: Square ABCD with center at point X. A
Name the image of the segment: E F
a) 90( clockwise rotation of [pic] about X. a) _Line_BG_ X
D B
b) 180( rotation of (DHX about X. b) _ Triangle BFX
H G
c) 90( counterclockwise rotation of [pic] about H. c) _ Line DH
C
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