This visual dictionary is an excellent resource for the first week of high school geometry. Includes an introduction to the following concepts:Naming points, lines, segments, rays, and anglesDistinguishing between acute, right, and obtuse anglesKey definitions of quadrilaterals (parallelogram, rectangle, rhombus, square, trapezoid)Parallel and perpendicular segments/lines.Transformation definitions - translation, reflection, rotation (distinguishing between counterclockwise and clockwise)Memory