2 Congruent Rotated Nonagons
Illustration of 2 regular congruent nonagons that have the same center. One nonagon has been rotated 20° in relation to the other.
Keywordsshapes, concave, geometric shape, Irregular, polygons, nine sides, nonagons, closed polygon, nonregular
Florida Center for Instructional Technology Clipart ETC (Tampa, FL: University of South Florida, 2009)