HSG-SRT.A.1

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- HSG-SRT.A.1Verify experimentally the properties of dilations given by a center and a scale factor:
- HSG-SRT.A.2Given two figures, use the definition of similarity in terms of similarity transformations to decide if they are similar; explain using similarity transformations the meaning of similarity for triangles as the equality of all corresponding pairs of angles and the proportionality of all corresponding pairs of sides.
- HSG-SRT.A.3Use the properties of similarity transformations to establish the AA criterion for two triangles to be similar.

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## HSG-SRT.A.1b

## The dilation of a line segment is longer or shorter in the ratio given by the scale factor.

5 Lesson(s)

### Perspective Art Project

8th Grade Math »
Unit: Linear Equations in two Variables

8th Grade Math »
Unit: Linear Equations in two Variables

Big Idea:

#### This project is fun, fun, fun for students and also so educational on a middle school and high school level connecting dilations, similar figures, and 3-D art!

Standards:

Favorites
(6)

Resources
(26)

Reflections
(3)

### Dilations on the Coordinate Plane, Center (0, 0)

Geometry »
Unit: Similarity in Triangles

Geometry »
Unit: Similarity in Triangles

Big Idea:

#### Students dilate objects on the coordinate plane and identify the scale factor of dilations that take a pre-image to an image.

Standards:

Favorites
(2)

Resources
(16)

### Dilations on the Coordinate Plane, Center (h, k)

Geometry »
Unit: Similarity in Triangles

Geometry »
Unit: Similarity in Triangles

Big Idea:

#### Students will practice performing and describing dilations with centers other than (0, 0) and scale factors greater than one or between zero and one.

Standards:

Favorites
(3)

Resources
(19)

Big Idea:

#### Taking dilations to task. In this lesson, students will demonstrate their mastery of dilations by tackling challenging problems and tasks.

Standards:

Favorites
(3)

Resources
(19)

Reflections
(2)

### Making Connections Between Art Project and Dilations Day 1 of 3

8th Grade Math »
Unit: Linear Equations in two Variables

8th Grade Math »
Unit: Linear Equations in two Variables

Big Idea:

#### This lesson will really help your students connect the dots between the perspective art project and the math of performing dilations on the coordinate plane using similar triangles.

Standards:

Favorites
(1)

Resources
(16)

Reflections
(3)

Common Core Math

### Kindergarten

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### First Grade

### Second Grade

### Third Grade

### Fourth Grade

### Fifth Grade

### Sixth Grade

### Seventh Grade

### Eighth Grade

### Ninth and Tenth Grade

### Kindergarten

### First grade

### Second grade

### Third Grade

### Fourth grade

### Fifth grade

### Middle School

Kindergarten

First Grade

Second Grade

Third Grade

Fourth Grade

Fifth Grade

Sixth Grade

Seventh Grade

HS Number & Quantity

HS Algebra

HS Functions

HS Geometry

Kindergarten

First Grade

Second Grade

Third Grade

Fourth Grade

Fifth Grade

Sixth Grade

Seventh Grade

Eighth Grade

Ninth and Tenth Grade

Kindergarten

First grade

Second grade

Third Grade

Fourth grade

Fifth grade

Middle School