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A glide reflection is the composition of a reflection across a line and a translation parallel to the line. This footprint trail has glide-reflection symmetry. Applying the glide reflection maps each left footprint into a right footprint and vice versa.
The set of all reflections in lines through the origin and rotations about the origin, together with the operation of composition of reflections and rotations, forms a group. The group has an identity: Rot(0). Every rotation Rot(φ) has an inverse Rot(−φ). Every reflection Ref(θ) is its own inverse. Composition has closure and is ...
In Euclidean geometry, a translation is a geometric transformation that moves every point of a figure, shape or space by the same distance in a given direction. A translation can also be interpreted as the addition of a constant vector to every point, or as shifting the origin of the coordinate system. In a Euclidean space, any translation is ...
In mathematics, reflection symmetry, line symmetry, mirror symmetry, or mirror-image symmetry is symmetry with respect to a reflection. That is, a figure which does not change upon undergoing a reflection has reflectional symmetry. In 2-dimensional space, there is a line/axis of symmetry, in 3-dimensional space, there is a plane of symmetry
A three-part lesson is an inquiry-based learning method used to teach mathematics in K–12 schools. The three-part lesson has been attributed to John A. Van de Walle, a mathematician at Virginia Commonwealth University .
The Interpretive Theory of Translation [1] (ITT) is a concept from the field of Translation Studies.It was established in the 1970s by Danica Seleskovitch, a French translation scholar and former Head of the Paris School of Interpreters and Translators (Ecole Supérieure d’Interprètes et de Traducteurs (ESIT), Université Paris 3 - Sorbonne Nouvelle).
The Dog and Its Reflection (or Shadow in later translations) is one of Aesop's Fables and is numbered 133 in the Perry Index. [1] The Greek language original was retold in Latin and in this way was spread across Europe, teaching the lesson to be contented with what one has and not to relinquish substance for shadow.
Kurt Matthias Robert Martin Hahn CBE [1] (5 June 1886 – 14 December 1974) was a German educator. He was decisive in founding Stiftung Louisenlund , Schule Schloss Salem , Gordonstoun , Outward Bound , the Duke of Edinburgh's Award , and the first of the United World Colleges , Atlantic College .