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/