When talking about figures on a coordinate plane, what does "congruent" mean?

Different shape, different size

Suppose a rectangle undergoes a reflection across the x-axis and a translation 5 units down. Which of the statements is true?

The resulting rectangle will be congruent to the original rectangle regardless of the order of the rotation and the translation.

The resulting rectangle will be congruent to the original rectangle only if the rotation occurs before the translation.

The resulting rectangle will be congruent to the original rectangle only if the translation occurs before the rotation.

The resulting rectangle will not be congruent to the original rectangle regardless of the order of the rotation and the translation.

Identify the transformation from ABC to A'B'C'.

90 o counter clockwise rotation

Identify the transformation from ABCD to A'B'C'D'.

90 o counter clockwise Rotation

What transformation is shown in the diagram above?

90 degree Rotation Counter-Clockwise

What is the sequence of transformations?

Reflect over the y then reflect over the x

Reflect over the x then reflect over the y

Translate 4 units then rotate 90˚

Rotate 90˚ then reflect over the x

What is a reflection?

When you flip or mirror an object across a line.

When you turn an object around a point.

When you slide an object form one place to another.

What does congruent mean?

angles faces and sides or two of the same things

Identify the transformation.

Translation 5 units left, 1 unit up.

Translation 5 units right, 1 unit down

Congruency and Transformations

Authored by Barbara White

Mathematics

8th Grade

CCSS covered

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MULTIPLE CHOICE QUESTION

2 mins • 1 pt

A turn is also called a ___________.

Translation

Reflection

Rotation

Transformation

Tags

CCSS.8.G.A.3

CCSS.HSG.CO.A.5

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

A slide is also called a _________.

Translation

Reflection

Rotation

Transformation

Tags

CCSS.8.G.A.3

CCSS.HSG.CO.A.5

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Describe the Transformation

Translation

Rotation

Reflection

Tags

CCSS.8.G.A.3

CCSS.HSG.CO.A.5

MULTIPLE CHOICE QUESTION

1 min • 1 pt

What is this picture an example of?

An angle

A cat vertex

Rotation

Tags

CCSS.8.G.A.3

CCSS.HSG.CO.A.5

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Which of the statements is true about the graphed triangles?

They are similar, because one can be obtained by dilating the other about the origin with a scale factor of 2.

They are similar, because one can be obtained by dilating the other about the origin with a scale factor of 1/2.

They are not similar, because one can be obtained by dilating the other about the origin with a scale factor of 2.

They are not similar, because one can be obtained by dilating the other about the origin with a scale factor of 1/2.

Tags

CCSS.8.G.A.4

CCSS.HSG.SRT.A.2

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

What will be the new position of the given point after a reflection across the y-axis?

Tags

CCSS.8.G.A.3

CCSS.HSG.CO.A.5

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Which series of transformations were performed in the figure?

Translation 5 units down, reflection over the y-axis

Reflection over the x-axis, translation 6 units right

Rotation 90^oclockwise, reflection over the x-axis

Rotation 180^oclockwise, reflection over the y-axis

Tags

CCSS.8.G.A.3

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Congruency and Transformations

A turn is also called a ___________.

A slide is also called a _________.

Describe the Transformation

What is this picture an example of?

Which of the statements is true about the graphed triangles?

What will be the new position of the given point after a reflection across the y-axis?

Which series of transformations were performed in the figure?

A type of transformation where a figure is “flipped” over a line of symmetry. A reflection produces a mirror image of a figure.

Which transformation(s) create(s) congruent figures?

When talking about figures on a coordinate plane, what does "congruent" mean?

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