Congruent Triangles

Cathy, Oct 23, 2016

A discovery of congruent triangles and their properties

Table of Contents

  1. Angles of Triangles
    1. Finding Angle Measures
    2. Measuring Exterior Angles
    3. Classifying Triangles by Sides-part 1
    4. Classifying Triangles by Sides-part 2
    5. Classifying Triangles by Sides - part 3
    6. Classifying Triangles by Angles

1.

Angles of Triangles

How are the angle measures of a triangle related?

  • 1. Finding Angle Measures
  • 2. Measuring Exterior Angles
  • 3. Classifying Triangles by Sides-part 1
  • 4. Classifying Triangles by Sides-part 2
  • 5. Classifying Triangles by Sides - part 3
  • 6. Classifying Triangles by Angles

1.1.

Finding Angle Measures

Interior Angle Measures of a Triangle
In the triangle above, points A, B, and C are vertices. Drag any vertex and notice how the angle and side measures change.
Regardless of the movement of the vertices, what is the total interior angle measure of the triangle? [br]([math]m\angle A+m\angle B+m\angle C[/math])
In your notes...
Write a sentence in your notes to help you remember what you learned (or to support what you already knew) about the total interior angle measure of any triangle.
– Cathy

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1.6.

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