Make a Flake
This sketch follows the usual snowflake rules. What symmetries does it have? What makes a flake look good to you? Interesting?
More GeoGebra at
Triangle Names and Angle Sum (Interior and Exterior)
IM2.7 T9: A special inscribed (?) angle
Exploration 1 - Proportionallity with Angle Bisector
Reflect Points Y Axis