*Geometry with Math Energy TV*

Math Energy Geogebra, Nov 14, 2019

Geometry with Math Energy TV

Table of Contents

  1. Constructions
    1. Practice - Construct an Equilateral Triangle
    2. Check - Is it an Equilateral Triangle?
    3. Practice - Construct an Angle Bisector
    4. Check - Is it an Angle Bisector?
    5. Practice - Construct a Perpendicular Bisector
    6. Check - Is it a Perpendicular Bisector?
    7. Practice - Copy an Angle
    8. Practice - Construct a Parallel Line
  2. Special Angle Pairs
    1. Practice - Find Unknown Angles - Example 1
    2. Practice - Find Unknown Angles - Example 2
  3. Proofs
    1. Practice - Proofs with Partitioning: Example 1
    2. Practice - Proofs with Partitioning: Example 2
    3. Practice - Proofs with Partitioning: Example 3
    4. Practice - Proofs with Partitioning: Example 4
  4. Transformations

1.

Constructions

How to use a compass (and thus circles) to construct various figures.

  • 1. Practice - Construct an Equilateral Triangle
  • 2. Check - Is it an Equilateral Triangle?
  • 3. Practice - Construct an Angle Bisector
  • 4. Check - Is it an Angle Bisector?
  • 5. Practice - Construct a Perpendicular Bisector
  • 6. Check - Is it a Perpendicular Bisector?
  • 7. Practice - Copy an Angle
  • 8. Practice - Construct a Parallel Line

1.1.

Practice - Construct an Equilateral Triangle

Given the following line segment, use circles to construct an equilateral triangle.
Given the following line segment, use circles to construct an equilateral triangle.
Given the following line segment, use circles to construct an equilateral triangle.
Constructions - Construct an Equilateral Triangle
– Coach Suzzette, Math Energy Geogebra

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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1.8.

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2.

Special Angle Pairs

How to solve for unknown angles using special relationships.

  • 1. Practice - Find Unknown Angles - Example 1
  • 2. Practice - Find Unknown Angles - Example 2

2.1.

Practice - Find Unknown Angles - Example 1

Find the measure of each lettered angle in the figure below. Enter your numerical answers to check whether they are correct!
Need help?
[br][url=https://youtu.be/-0m7Y1ATiwI]How to Find Unknown Angles, Example 1 | Coach Suzzette[/url]
– Math Energy Geogebra

2.2.

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3.

Proofs

  • 1. Practice - Proofs with Partitioning: Example 1
  • 2. Practice - Proofs with Partitioning: Example 2
  • 3. Practice - Proofs with Partitioning: Example 3
  • 4. Practice - Proofs with Partitioning: Example 4

3.1.

Practice - Proofs with Partitioning: Example 1

Proofs - Proofs with Partioning: Example 1
[size=150]Why was Statement 2 valid?[/size]
[size=150]Why was Substitution used?[/size]
[size=150]Could the order of Statements 2 and 3 have been switched and still result in a valid proof?[/size]
– Math Energy Geogebra

3.2.

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3.3.

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3.4.

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4.

Transformations


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