
Equilateral Triangles Activity
Standards/Benchmarks Alignment and Math Forum Resources


Alignment to Radnor Township School District Mathematics Standards and Benchmarks:
 Standard 2: Geometry and Measurement Concepts
 Apply the properties of one, two and three dimensional geometric figures to describe, reason and solve problems about shape, size, position, and motion of objects.
 Benchmarks
 analyze and generalize geometric patterns, such as tessellations (6)
 familiarity with polygons (7)
 use transformations in the coordinate plane (8)
 recognize rotational and bilateral symmetry (8)
Correlation with the MathThematics textbook:
 Book 1
 p. 18 "triangle"
 p. 80 Polygons and Line Symmetry
 p. 120 Transformations
 p. 461 Building with Nets
 Book 2
 p. 217 Constructing Triangles
 p. 265 "rotational symmetry"
 p. 268 "line symmetry"
 p. 291 Translations
 p. 410 Triangles and Similarity
 p. 513 Classifying Quadrilaterals
 p. 565 Tessellations
 p. 573 "regular tessellation"
 p. 575 "semiregular tessellation"

 Book 3
 p. 241 Constructing Triangles
 p. 258 Rotational Symmetry
 p. 264 "line symmetry"
 p. 272 Classifying Quadrilaterals
 p. 280 Rational Numbers and Polygons
 p. 288 "tessellation"
 p. 290 Working with Triangles
 p. 405 Constructing Nets
 p. 511 "transformation"

Math Forum Resources:
Dr. Math
Teacher Exchange
Problems of the Week
Teacher2Teacher
Internet Mathematics Library
Other Web Resources:
Shelly Berman, Annie Fetter & Suzanne Alejandre
Send comments/questions to
the presenters.
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