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# Instruction - PowerPoint PPT Presentation

Instruction. Key Concepts. Two figures are similar if and only if there is a similarity transformation that maps one figure onto the other. Rigid Motions: Glide reflections, reflections, translations, and rotations are the only four rigid motions or isometries in a plane. Instruction.

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## Instruction

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Presentation Transcript

Instruction

Key Concepts

• Two figures are similar if and only if there is a similarity transformation that maps one figure onto the other.
• Rigid Motions: Glide reflections, reflections, translations, and rotations are the only four rigid motions or isometries in a plane.

Instruction

Problem #1

ΔDEF has vertices D(2, 0), E(1, 4), and F(4, 2).

What is the image of ΔDEF when you apply the composition ?

Instruction

Problem #1

ΔDEF has vertices D(2, 0), E(1, 4), and F(4, 2).

What is the image of ΔDEF when you apply the composition ?

Instruction

Problem #2

What is a composition of rigid motions and a dilation that maps ΔRST to ΔPYZ?

Instruction

AA~ of Triangles

Instruction

Guided Practice

• Are these figures similar? Explain.

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Guided Practice

• Is there a similarity transformation that maps ΔJKL to ΔRST? If so, identify the similarity transformation.

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Guided Practice

• What is the similarity transformation of the following image?

Instruction

Guided Practice