R

=Geometry Definitions=

The notation is usually shown as a R(center, degrees) || A rotation is basically when a shape changes position not dimension around a point. So you twist a shape around a point without changing it. || [] || media type="youtube" key="Q07S8gTmH4M" height="315" width="420" ||
 * ===GeometryTerm=== || ===Definition=== || ===Picture=== || ===Notation=== || Way to Remember || ===Website=== || ===Examples=== ||
 * Rotation || Rotation is when a polygon changes in direction or twists into a different position without the shape changing it's measurements. || [[image:geometrywilliams/rotation.JPG width="335" height="209"]] || === ===
 * **Geometry Tern** || **Definition** || **Picture** || **Notation** || **Way to Remember** || **Website** || **Examples** ||
 * Reflex Angle || An angle between 180o and 360o || [[image:reflex_angle1.gif]] || No notation || Being “wider” than an obtuse angle is just showing off reflexes:). || [] || media type="youtube" key="wFlG6WyffT0" height="315" width="420" ||
 * Rhombus || A quadrilateral that has all equal sides, but not all equal angles. Opposite sides are parallel and congruent. || [[image:rhombus.JPG width="299" height="189"]] || No notation || A rhom**bus** is a square that looks like it got hit by a **bus.** || @http://www.mathopenref.com/rhombus.html || media type="file" key="rhombus.video.flv" width="252" height="187" align="center" ||
 * Reflection || A reflection is a transformation that flips a figure across a line || [[image:http://commons.activemath.org/ActiveMath2/geometryPics/reflection_fig.png?lang=en]] || No Notation || A refection is just a shape that got smacked on the underside and flipped over || http://bit.ly/z1fGKS ||  ||
 * Ray || A ray is a line that has a starting point but then infinitely extends in one direction, in a straight line || [[image:http://www.icoachmath.com/image_md/Ray1.gif]] || No notation || The ray goes to infinity, and beyond! || [] ||  ||
 * Right Angle || An angle that's measurement is exactly 90 degrees. || [[image:file:///C:/Users/HANNA_%7E1/AppData/Local/Temp/moz-screenshot-4.png]][[image:90_degrees.png]] || A square drawn in the crook of the angle so that the legs form 2 sides of the square. || A right angle is always 90o; it always makes half of a square. || R|http://www.mathopenref.com/angleright.html || media type="youtube" key="gv7SgrTqCuY" height="315" width="420" ||


 * An angle that’s measurement is exactly 90o. ||