Electrical Engineering Community's Tools - geometry reference sheet - many more on this site
This easy to use printable set of foldable 3D shapes can be used for all sorts of math learning! Plus, let kids get creative and turn it into a math and art lesson in one!
Geometry formulas and abbreviations -- grade 7-8
This 3 page packet includes geometric terms for and shapes, Area, Perimeter, Volume and Rotational Symmetry
Formula sheet - Geometry
Great transformations to be done with graph paper - foldables coordinate plane reflections over the x-axis and y-axis
5 Activities to Teach Angles More
Good for Algebra I going into the CCSS since we are inheriting sequences and series.
A series of six geometry projects for high school students