Geometry Introduction to Angles http://www.quia.com/servlets/quia.activities.common.ActivityPlayer?AP_rand=799325766&AP_activityType=1&AP_urlId=65822&gameType=list         Basic vocabulary Identifying Right, Acute, and Obtuse Angles http://www.toonuniversity.com/flash.asp?err=200&engine=         Game - aim the robot to shoot at the correct description of the picture. Figures and Polygons http://www.mathleague.com/help/geometry/polygons.htm Vocabulary words and illustrations Identify Polygons http://www.aaamath.com/B/g318_px1.htm Name the Polygons http://www.aaamath.com/B/g318_px1.htm Geometry tutorial http://www.math.psu.edu/geom/koltsova/index.html The basics:  vocabulary and illustrations. Tessellations http://www.coolmath4kids.com/tesspag1.html Congruent Triangles http://www.coolmath4kids.com/congruent.html Interactive Tangrams http://www.apples4theteacher.com/tangrams.html         It takes a while for this one to load, but it's worth the wait. Symmetry http://www.linkslearning.org/Kids/1_Math/2_Illustrated_Lessons/4_Line_Symmetry/index.html         An animated, interactive lesson on symmetry.  You can watch the lesson as a class, then have your students click next to get to the activities. Geoboards http://www.mathplayground.com/geoboard.html         An interactive geoboard. Geometry Vocabulary Transformations         A visual showing definitions and examples of reflection, rotation and translations. Geometry Vocabulary Use this PowerPoint presentation to introduce your students to geometry vocabulary (lines, line segments, angles, and tools for measurement).  This link takes you to the Activities Server.  Look for geometry.ppt.