Topics
3. Transformations & Congruence
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United States of AmericaUT
Grade 8

3.02 Reflections on the coordinate plane

Lesson
Practice

Interactive practice questions

Which image below represents the reflection for the following shape about the vertical mirror line?

A right triangle with its right angle situated at the lower right vertex, and its acute angles placed at the upper vertex and the left vertex. The upper vertex and the right angle vertex are collinear with the mirror line.

 

A right triangle with its right angle situated at the upper right vertex, and its acute angles placed at the lower vertex and the left vertex. The lower vertex and the right angle vertex are collinear with the mirror line.
A

 

A right triangle with its right angle situated at the upper left vertex, and its acute angles placed at the lower vertex and the right vertex. The lower vertex and the right angle vertex are collinear with the mirror line.
B

 

A right triangle with its right angle situated at the lower left vertex, and its acute angles placed at the upper vertex and the right vertex. The upper vertex and the right angle vertex are collinear with the mirror line.

 

C
Easy
< 1min

Which image below represents the reflection for the following shape about the vertical mirror line?

Easy
< 1min

Which image below represents the reflection for the following shape about the vertical mirror line?

Easy
< 1min

Which three of the following diagrams show a reflection across the given line?

Easy
< 1min
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Outcomes

8.G.3

Observe that orientation of the plane is preserved in rotations and translations, but not with reflections. Describe the effect of dilations, translations, rotations, and reflections on two-dimensional figures using coordinates.

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