- 1. Reported By: Junila A. Tejada
- 2. Measurement of the Earth. In today’s usage, it is a branch of mathematics dealing with spatial figures.
- 3. a process which changes the position (and possibly the size and orientation) of a shape. There are four types of transformations: reflection, rotation, translation and enlargement.
- 4. Historical Overview of Transformation Geometry 17th century Mathematician. Made a great contribution in analytic geometry. First used the Cartesian coordinate system. Every point of a curve is given two numbers that represents its location in a plane. Rene Descartes
- 5. Historical Overview of Transformation Geometry Proposed a system of analytic geometry similar to Descartes. Credited because of his independent developing ideas in analytical geometry. invented modern number theory virtually single-handedly. Formulated several theorems on number theory, as well as contributing some early work on infinitesimal calculus.
- 6. Historical Overview of Transformation Geometry assign algebraic ideas to geometric figures led to the study of group theory in geometry. Enlanger Program Study in geometry defined as the study of transformations that leave objects invariant. Rearranged the unrelated geometry know at his time into a cohesive system. Felix Klein ( 1849-1925)
- 7. Klein’s Idea • A geometry is a set of objects with the rules determined by its symmetries, i.e., its transformations. Two geometries may have the same objects but different transformations. • The properties of the geometry are properties that are not changed by the transformations.
- 8. Different transformations have been used in art, architecture, crafts, and quilts throughout history. Historians have found numerous transformation designs in pottery, architecture, rugs, quilts, and art pieces from almost every culture. The design used can help to determine where and to whom an artifact belonged.
- 9. Developed in the 7th, 8th, 9th centuries from beliefs that creating a living objects in art was blasphemous or that God should create animals and other creatures in art work. Due to this belief, many did not use living creatures in their art work, instead they used different transformations and geometric designs to increase the appeal of their art and architecture. Arabesque
- 10. Appliqué a process when one piece of fabric is sewn onto another and then stitched together with an intricate design, traditionally had elaborate geometric transformations that were typically symmetric; such as flowers and houses that are not necessarily symmetric.
- 11. Transformational geometry is quite important in many fields, such as the study of architecture, anthropology, and art, to name a few. The study of which forms of transformations were used helps to distinguish time frames for artifacts and helps to illustrate which cultures may have made the item being studied. For example, architects are able to study the history of very old buildings, taking note of which transformations were used. A classical example that involves this study is the illustration of the study of the history of the Parthenon in Athens, Greece.
- 12. M. C. Escher (1898–1972) Dutch graphic artist. Escher would go to work on his pieces. Escher read a few mathematics papers regarding symmetry, specifically George Pólya’s (1887–1985) 1924 paper on 17 plane symmetry groups, and although he did not understand many of the ideas and the mathematical theory of why it worked, he did understand the concepts of the paper and was able to apply the ideas in his work. These concepts helped him to use mathematics more extensively throughout many of his later pieces.
- 13. Types of Transformation Reflection Translations Rotation Dilation
- 14. Reflection You can reflect a figure using a line or a point. All measures (lines and angles) are preserved but in a mirror image. Example: The figure is reflected across line l . You could fold the picture along line l and the left figure would coincide with the corresponding parts of right figure. l
- 15. moves a shape by sliding it up, down, sideways or diagonally, without turning it or making it bigger or smaller. Translation
- 16. Rotation Rotation (also known as Turn) turns a shape through a clockwise or anti-clockwise angle about a fixed point known as the Centre of Rotation. All lines in the shape rotate through the same angle. Rotation, (just like reflection) changes the orientation and position of the shape, but everything else stays the same.
- 17. Dilation A dilation is a transformation which changes the size of a figure but not its shape. This is called a similarity transformation.
- 18. “Do not just pay attention to the words; Instead pay attention to meaning behind the words. But, do not just pay attention to meanings behind the words; Instead pay attention to your deep experience of those meanings.” Tenzin Gyatso, The 14th Dalai Lama END