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Whiteboard
ClassFlow

Class Flow: Congruency

For Teachers 9th - 10th Standards
[Free Registration/Login Required] Here are many variations of congruent triangles displayed for students to test their knowledge.
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Whiteboard
ClassFlow

Class Flow: Congruent Triangles, Bi Conditional Statements

For Teachers 9th - 10th Standards
[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.
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Activity
Math Is Fun

Math Is Fun: Congruent

For Students 9th - 10th Standards
The resource investigates congruent shapes. Examples and definitions are included.
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Unit Plan
Shmoop University

Shmoop: Basic Geometry: Basic Shapes & Angles

For Students 9th - 10th Standards
The geometry resource explores basic shapes, lines, and angles. Descriptions, examples, and practice problems are included.
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Unit Plan
Shmoop University

Shmoop: Basic Geometry: Area of Irregular Shapes

For Students 9th - 10th Standards
The geometry resource investigates the area of irregular shapes. Detailed examples and practice exercises are included.
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Handout
Math Is Fun

Math Is Fun: Congruent Angles

For Students 9th - 10th Standards
Students learn about congruent angles. A definition, example, and tips are included.
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Website
National Council of Teachers of Mathematics

The Math Forum: Means Proportional and Geometric Means

For Students 9th - 10th Standards
Dr. Math helps a student discover the meaning of the mean proportional of two numbers. Detailed explanation with examples.
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Handout
Geometry Help

Geometry Help: Kites (Deltoids)

For Students 9th - 10th Standards
Explains the basic concept of kites with step-by-step instructions and methods for solving specific problems on your own relating to this topic.