Geometry: Congruency and Similarity – High School Homeschool Resources
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Two figures are congruent if they have the same shape and the same size. A Congruent figure can be moved, turned, and flipped so that it coincides with the other figure. Two figures are similar if they have the same shape, but they may or may not have the same size.
Here is a list of websites to help you teach and learn more about congruency and similarity in Geometry:
Math is Fun (Similar)
Math is Fun (Congruent)
Math Worksheets Land (Triangles – Similarity and Congruence)
Virtual Nerd (Use congruence and similarity criteria for triangles to solve problems and to prove relationships in geometric figures.)
mdK12.org (School Improvement in Maryland) This is a complete, very detailed, lesson plan which includes worksheets and answer keys.
Online Math Learning (Congruence and Similarity Games)
Spokane Schools.org (Triangle Congruence and Similarity)
Education Portal (Properties of Congruent and Similar Shapes – Video)
Here is a list of resources from Teachers Pay Teachers Stores:
Similar Triangles Snap! A Matching Activity from Nicola Waddilove
Similar Polygons and Triangles Self Quiz Sheets for Geometry Students from Tiffany Brodsky
Congruence and Triangles Lesson with Homework from Ashley Spencer
Similar Triangles Lesson with Homework from Ashley Spencer
Similar Triangles Review (Similarity Squares) from Vicki Hines
Similarity and Congruence from Katie Cartier
Prove Triangle Congruence – SSS, SAS, ASA, AAS (Lesson with Homework) from Ashley Spencer
Geometry Triangles Congruency Similarity Note Cards from Secondary Math Shop
Methods of Proving Triangles Similar and Congruent Wall Posters from Secondary Math Shop
Sort: Writing Congruence Statement for Congruent Triangles from Caryn Loves Math
Geometry PowerPoint – Triangle Congruence and Proofs (Chapters 4 and 5) from Joseph Mezzina
Geometry Similar Polygons Class Starters from Elizabeth Welch
Geometry “A” Unit 4: Triangles and Congruency Graphic Organizers from Secondary Math Shop
Triangles – Triangle Congruence Relay Race Game (8 Rounds of 4 Problems) from Marie Dompierre
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