LessonThreeNeSGeometricBeautyofSnowflakesPrt3Rvsd121016.pptx

Hexagonal Plate Geometrics:
Rotational Symmetry
• A regular hexagon
• Rotational symmetry
definition – at every turn,
hexagon looks same at
each turn
• Nature’s snowflakes
mostly asymmetrical
because of atmospheric
conditions & melting as
flakes falls to earth
Point of
intersection of
each symmetry
line of axis (red
lines)
Imagine turning or rotating this hexagon to the right around its center point and
stopping at each new hexagonal point until it rests where you began turning it by
following the yellow arrows. Using the blue ball as a reference marker, imagine
moving it to its next point, one point at a time. How many turns until the blue ball
reaches its original resting position? Answer on next slide.