Hubert Ludwig, Ball State University

Back to Geometry Bibliography: Contents

The Pentagon Problem: Geometric Reasoning with Technology Rose Mary Zbiek Area ratios for a pentagon inscribed in a pentagon inscribed in a pentagon. (889, 1996) 86 - 90 The Incredible Three-by-Five Card Dan Lufkin Three similar triangles cut from a three-by-five card. Geometric activities for the triangles. (889, 1996) 96 - 98 Using Lined Paper to Make Discoveries Sandra L. Hudson Sharing Teaching Ideas. Proportional divisions by parallel transversals (the lines on the paper.) (87, 1994) 246 - 247 The Sidesplitting Story of the Midpoint Polygon Y. David Gau and Lindsay A. Tartre The midline of a triangle theorem. Varignon's theorem. Extensions to pentagons and other polygons. (87, 1994) 249 - 256 Using Similarity to Find Length and Area James T. Sandefur Similar figures and scaling factors. Constructing spirals in triangles and squares. Involvement with the theorem of Pythagoras. (87, 1994) 319 - 325 Multiple Approaches to Geometry: Teaching Similarity Sharon L. Senk and Daniel B. Hirschhorn Teaching similarity first at a visual level and then at a theoretical level. (83, 1990) 274 - 279 Interpreting Proportional Relationships Kathleen A. Cramer, Thomas R Post, and Merlyn J. Behr Activities which include some discussion of surface area and map scaling. (82, 1989) 445 - 452 The Bank Shot Dan Byrne Geometry of similar triangles and reflections applied to pool. 79, (1986) 429 - 430, 487. Where Is the Ball Going? Jack A. Ott and Anthony Contento Examination of ball paths on a pool table. BASIC routine included. 79, (1986) 456 - 460. A Few Problems Involving Scale William D. McKillip and Cynthia Stinnette Kay Making scale drawings. 78, (1985) 544 - 547. A Geometry Exercise From National Assessment Donald R. Kerr, Jr. Similarity exercises. 74, (1981) 27 - 32. Tiling Richard A. Freitag Activity involving replication of figures. Congruence and similarity. 71, (1978) 199 - 202. Discovering A Congruence Theorem: A Project Of A Geometry For Teachers Class Malcolm Smith Showing that corresponding chords of homothetic circles are parallel. 65, (1972) 750 - 751. On The Shape Of Plane Curves W. G. Dotson, Jr. A study of similarity. 62, (1969) 91 - 94. The Use Of Elastic For Illustrating Homothetic Figures Alexander Arcache A model for demonstrating a homothety. 61, (1968) 54. Similar Polygons and A Puzzle Don Wallin Construction problems and similar polygons. 52, (1959) 372 - 373. The Definition Of Similarity George W. Evans Two figures will be similar if every triangle of one is similar to the corresponding triangle of the other. 15, (1922) 147 - 151. H.J.L. 07/15/97 email: 00hjludwig@bsu.edu home page: http://www.cs.bsu.edu/~hjludwig/ |

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