Chapter 2

Transformations

Section 1 - Congruent Figures

• Desmos - Corresponding Parts and Congruence

• CommonCore Sheets - Identify congruent, similar or neither figures

• IXL - Congruence statements and corresponding parts

• IXL - Side lengths and angle measures of congruent figures

Introduction to Transformations

• Desmos - Transformations using Everyday Language

• CommonCore Sheets - Identify transformations (Translation, rotation, reflection)

• Khan Academy - Identify transformations (Translation, rotation, reflection, dilation)

• IXL - Identify reflections, rotations and translations

• Khan Academy - Congruence & transformations (Includes figures that look identical)

Section 2 - Translations

• Desmos - Translations

• IXL - Translate Shapes on the Coordinate Plane

• Desmos - Translations with Coordinates

• Desmos - Translations Coordinate Notation

• IXL - Translations: Find the Coordinates

• Khan Academy - Translate points (Given translation, find new coordinates or plot point)

• Khan Academy - Translate shapes (Given coordinate notation, translate the shape by its vertices)

• Khan Academy - Determine translations

Section 3 - Reflections (Across the axes only)

• Desmos - Reflections

• Desmos - Reflections Coordinates

• Khan Academy - Reflect points (and find the coordinates)

• IXL - Reflect Points and Shapes

• Khan Academy - Reflect shapes - Might be hard to move the pre-set points

• Khan Academy - Determine line of reflection

• IXL - Reflection (Find the coordinates)

Section 4 - Rotations (90 and 180 degrees only)

• Desmos - Rotations

• Quizlet - Identify Rotations (Matching)

• Quizizz- Identify Rotations (Multiple Choice)

• Desmos - Rotations without Tracing Paper

• IXL - Rotations: Graph the point

• Khan Academy - Rotate Points - uses negative (counterclockwise) notations

• Khan Academy - Determine rotations - uses negative (counterclockwise) notations

Sequence of Rigid Transformations

• IXL - Describe a Sequence of (Basic) Transformations (does not include dilations)

• Quizlet (Flashcards) - Describe a Sequence of Transformations (does not include dilations)

• Khan Academy - Find measures using rigid transformations

• Khan Academy - Rigid transformations: preserved properties

• Khan Academy - Mapping shapes

• IXL - Graph a Sequence of Transformations (may be hard on a computer, includes reflections not on x/y axis)

• Math Playground - Shape Mods Transform the green shapes into the red shapes. Use translations, reflections, and rotations to solve each challenging puzzle.

• Math Playground - Reflect and Rotate Select "random puzzle" or "play a game"

Section 5 - Similar Figures

• Khan Academy - Similarity & transformations (Includes figures that look identical)

• IXL - Side lengths and angle measures of similar figures (shapes may not always face same direction) (or this link which uses geometry notation, but shapes are facing the same direction)

• IXL - Are these shapes similar?

Section 6 - Perimeters and Areas of Similar Figures

*the Key Ideas in textbook is not an 8th grade math standard

Section 7 - Dilations

• Khan Academy - Find Center of Dilation

• IXL - Dilations: graph the image

• IXL - Dilations: Find the coordinates

• IXL - Scale factor and classification (Enlargement or reduction)

• Khan Academy - Find Scale Factor of a Dilation (includes dilation not at the origin)

• Khan Academy - Dilate Triangles with a Given Scale Factor (Not at the Origin)

Sequence of Transformations with Dilations

• Quizlet (Flashcards) - Describe a Sequence of Transformations

• Khan Academy - Properties of Dilations (includes dilation not at the origin)

• IXL - Similar Triangles and Similiarity Transformations