4 Rotated Concentric Ellipses
Illustration of 4 concentric congruent ellipses that are rotated about the center at equal intervals of 45°. The ellipses are externally tangent to the circle in which they are inscribed.
Keywordsellipse, oval, ellipses, ovals, circle, spirals, spiral, path, circles, designs, reflection, reflect, symmetry, concentric, congruent, symmetric, hypotrochoid, hypotrochoids, elliptical paths, epitrochoid, hypocycloid, spirograph design, reflective
Florida Center for Instructional Technology Clipart ETC (Tampa: University of South Florida, 2007)