Unit 2

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Section A

Properties of Dilations

1

Scale Drawings

Let’s make a scale drawing.

2

Scale of the Solar System

Let’s dilate figures.

3

Measuring Dilations

Let’s dilate polygons.

4

Dilating Lines and Angles

Let’s dilate lines and angles.

5

Splitting Triangle Sides with Dilation (Part 1)

Let’s draw segments connecting midpoints of the sides of triangles.

Section A

Properties of Dilations

1

Scale Drawings

Let’s make a scale drawing.

2

Scale of the Solar System

Let’s dilate figures.

3

Measuring Dilations

Let’s dilate polygons.

4

Dilating Lines and Angles

Let’s dilate lines and angles.

5

Splitting Triangle Sides with Dilation (Part 1)

Let’s draw segments connecting midpoints of the sides of triangles.

Section B

Similarity Transformations and Proportional Reasoning

6

Connecting Similarity and Transformations

Let’s identify similar figures.

7

Reasoning about Similarity with Transformations

Let’s describe similar triangles.

8

Are They All Similar?

Let’s prove that figures are similar.

Section B

Similarity Transformations and Proportional Reasoning

1

Connecting Similarity and Transformations

Let’s identify similar figures.

2

Reasoning about Similarity with Transformations

Let’s describe similar triangles.

3

Are They All Similar?

Let’s prove that figures are similar.

4

Conditions for Triangle Similarity

Let’s prove that some triangles are similar.

5

Other Conditions for Triangle Similarity

Let’s prove that more triangles are similar.

6

Splitting Triangle Sides with Dilation (Part 2)

Let’s investigate parallel segments in triangles.

7

Weighted Averages

Let’s split segments using averages and ratios.

8

Weighted Averages in a Triangle

Let’s partition special line segments in triangles.

Section C

Similarity in Right Triangles

14

Practice with Proportional Relationships

Let’s find unknown values in proportional relationships.

15

Using the Pythagorean Theorem and Similarity

Let’s explore right triangles with altitudes drawn to the hypotenuse.

16

Proving the Pythagorean Theorem

Let’s prove the Pythagorean Theorem.

Section C

Similarity in Right Triangles

1

Practice with Proportional Relationships

Let’s find unknown values in proportional relationships.

2

Using the Pythagorean Theorem and Similarity

Let’s explore right triangles with altitudes drawn to the hypotenuse.

3

Proving the Pythagorean Theorem

Let’s prove the Pythagorean Theorem.

4

Finding All the Unknown Values in Triangles

Let’s find all the unknown values in right triangles.

Section D

Let’s Put It to Work

18

Reflection Similarity

Let’s use similarity to solve problems.

Section D

Let’s Put It to Work

1

Reflection Similarity

Let’s use similarity to solve problems.

Section A

Properties of Dilations

1

Scale Drawings

Let’s make a scale drawing.

2

Scale of the Solar System

Let’s dilate figures.

3

Measuring Dilations

Let’s dilate polygons.

4

Dilating Lines and Angles

Let’s dilate lines and angles.

5

Splitting Triangle Sides with Dilation (Part 1)

Let’s draw segments connecting midpoints of the sides of triangles.

Section B

Similarity Transformations and Proportional Reasoning

6

Connecting Similarity and Transformations

Let’s identify similar figures.

7

Reasoning about Similarity with Transformations

Let’s describe similar triangles.

8

Are They All Similar?

Let’s prove that figures are similar.

Section C

Similarity in Right Triangles

14

Practice with Proportional Relationships

Let’s find unknown values in proportional relationships.

15

Using the Pythagorean Theorem and Similarity

Let’s explore right triangles with altitudes drawn to the hypotenuse.

16

Proving the Pythagorean Theorem

Let’s prove the Pythagorean Theorem.

9

Conditions for Triangle Similarity

Let’s prove that some triangles are similar.

10

Other Conditions for Triangle Similarity

Let’s prove that more triangles are similar.

11

Splitting Triangle Sides with Dilation (Part 2)

Let’s investigate parallel segments in triangles.

12

Weighted Averages

Let’s split segments using averages and ratios.

13

Weighted Averages in a Triangle

Let’s partition special line segments in triangles.

17

Finding All the Unknown Values in Triangles

Let’s find all the unknown values in right triangles.

Section D

Let’s Put It to Work

18

Reflection Similarity

Let’s use similarity to solve problems.

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Unit 2 Resources

Properties of Dilations

Scale Drawings

Scale of the Solar System

Measuring Dilations

Dilating Lines and Angles

Splitting Triangle Sides with Dilation (Part 1)

Properties of Dilations

Scale Drawings

Scale of the Solar System

Measuring Dilations

Dilating Lines and Angles

Splitting Triangle Sides with Dilation (Part 1)

Similarity Transformations and Proportional Reasoning

Connecting Similarity and Transformations

Reasoning about Similarity with Transformations

Are They All Similar?

Similarity Transformations and Proportional Reasoning

Connecting Similarity and Transformations

Reasoning about Similarity with Transformations

Are They All Similar?

Conditions for Triangle Similarity

Other Conditions for Triangle Similarity

Splitting Triangle Sides with Dilation (Part 2)

Weighted Averages

Weighted Averages in a Triangle

Similarity in Right Triangles

Practice with Proportional Relationships

Using the Pythagorean Theorem and Similarity

Proving the Pythagorean Theorem

Similarity in Right Triangles

Practice with Proportional Relationships

Using the Pythagorean Theorem and Similarity

Proving the Pythagorean Theorem

Finding All the Unknown Values in Triangles

Let’s Put It to Work

Reflection Similarity

Let’s Put It to Work

Reflection Similarity

Properties of Dilations

Scale Drawings

Scale of the Solar System

Measuring Dilations

Dilating Lines and Angles

Splitting Triangle Sides with Dilation (Part 1)

Similarity Transformations and Proportional Reasoning

Connecting Similarity and Transformations

Reasoning about Similarity with Transformations

Are They All Similar?

Similarity in Right Triangles

Practice with Proportional Relationships

Using the Pythagorean Theorem and Similarity

Proving the Pythagorean Theorem

Conditions for Triangle Similarity

Other Conditions for Triangle Similarity

Splitting Triangle Sides with Dilation (Part 2)

Weighted Averages

Weighted Averages in a Triangle

Finding All the Unknown Values in Triangles

Let’s Put It to Work

Reflection Similarity