Icosidodecahedron

Geometry Notes ~Reflectional Symmetry -When a shape is folded in half and both sides match perfectly. ~Line of Symmetry -line where you can fold it ~Perimeter -the distance around its exterior on a flat surface. ~Area -the number of square units needed to fill up a region on a flat surface. ~Acute Angle -Any angle with a measure between 0 degrees and 90 degrees ~Right Angle -Any angle that measures 90 degrees ~Obtuse Angle -Any angle with a measure between 90 degrees and 180 degrees ~Straight Angle -Angle that has a measure of 180 degrees and are formed when the sides of an angle form a straight line. ~Transformation 1) Translation: A transformation that?s shape and size stays the same while sliding it to a new location.