Geometry-2D

Linda Bollman, Aug 12, 2014

Table of Contents

  1. Angle Relationships 8G5
    1. Interior Angles of a Triangle
    2. Sum of the Interior Angles of a Triangle
    3. Interior Angle Sum
    4. Exterior Angles
    5. Exterior Angles of Polygons
    6. Angles and Parallel Lines
    7. Parallel Lines Intersected by a Transversal
  2. Transformations
    1. Ferris Wheel Carnival Slider
    2. Frieze Activity
    3. Animated Twitter Bird
    4. Beach Beast
    5. 'Tangram' Puzzle 'Cat'
    6. Similarity by Dilation & Rotation
  3. Congruence 8G2
  4. Similarity 8G4
    1. Similarity
    2. Girl in the Mirror

1.

Angle Relationships 8G5

  • 1. Interior Angles of a Triangle
  • 2. Sum of the Interior Angles of a Triangle
  • 3. Interior Angle Sum
  • 4. Exterior Angles
  • 5. Exterior Angles of Polygons
  • 6. Angles and Parallel Lines
  • 7. Parallel Lines Intersected by a Transversal

1.1.

Interior Angles of a Triangle

[b]Drag the sliders. Drag the [color=#1551b5]BLUE[/color] points around.[/b][br]What can you conclude about the sum of the measures of the angles in a triangle?
Interior Angles of a Triangle
– Linda Bollman, Steve Phelps

1.2.

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1.3.

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1.4.

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1.5.

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1.6.

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1.7.

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2.

Transformations

  • 1. Ferris Wheel Carnival Slider
  • 2. Frieze Activity
  • 3. Animated Twitter Bird
  • 4. Beach Beast
  • 5. 'Tangram' Puzzle 'Cat'
  • 6. Similarity by Dilation & Rotation

2.1.

Ferris Wheel Carnival Slider

[color=#1551b5]Click on the Play button on the lower left hand corner to play the animation. [br]Or, use the slider to move the figures.[/color]
Ferris Wheel Carnival Slider
– elmadmongoose

2.2.

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2.3.

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2.4.

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2.5.

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2.6.

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3.

Congruence 8G2


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4.

Similarity 8G4

  • 1. Similarity
  • 2. Girl in the Mirror

4.1.

Similarity

Similarity
– Joe Chung

4.2.

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Information