ClassFlow
Class Flow: Angles in Geometry
[Free Registration/Login Required] This flipchart is a look at angles in geometry. Drawing, labeling, measuring, special angles: (right, straight, acute, obtuse) and congruence.
ClassFlow
Class Flow: Congruency
[Free Registration/Login Required] Here are many variations of congruent triangles displayed for students to test their knowledge.
ClassFlow
Class Flow: Congruent Triangles, Bi Conditional Statements
[Free Registration/Login Required] This flipchart contains an introduction to congruent triangles. It also introduces logic (p->q) including bi-conditional statements. A challenge is presented to students.
ClassFlow
Class Flow: Dissection Puzzles
[Free Registration/Login Required] If you like tangrams, you'll enjoy this flipchart. Dissect and arrange in different shapes all types of squares, triangles, and polygons.
Math Is Fun
Math Is Fun: Transformations
Students learn about transformations. Topics explored are resizing, types of transformations, and congruent shapes. Examples and definitions are included.
Math Is Fun
Math Is Fun: Congruent
The resource investigates congruent shapes. Examples and definitions are included.
Sonoma State University
Sonoma State University: Parallel Lines and Similar and Congruent Triangles
This site defines parallel lines, parallel lines cut by a transverse, and congruent triangles. It also contains links for related terms.
National Council of Teachers of Mathematics
The Math Forum: Similarity and Congruence
This site from Dr. Math at the Math Forum provides a collection of problems and exercises that require knowledge of the relations between similar or congruent shapes. Solutions are provided.
Doina Popovici
Math Play: Classifying Angles Jeopardy Game
An online Jeopardy game where students describe the type of angles, measurement of angles, and identify whether angles are complementary, supplementary or congruent.
Math Open Reference
Math Open Reference: Vertical Angles
A complete reference guide to vertical angles. It provides definitions, examples, and an interactive activity that enhances further explanation. Includes links to related topics.
Homeschool Math
Homeschool Math: Area of Right Triangles
This lesson presents the idea that the area of any right triangle is exactly half of a certain rectangle, and contains varied exercises for students.