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Laabri

Open Up - Grade 8 - Mathematics - Unit 2 - Lesson 4

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Last updated almost 3 years ago
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"Source: Open Up Resouces (Download for free at openupresources.org.)"

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1.

Triangle ABC is dilated using D as the center of dilation with scale factor 2.

The image is triangle . Clare says the two triangles are congruent, because their angle measures are the same. Do you agree?

Asemmisa {{asɛmmisaAhyɛnsode}}
2.

On graph paper, sketch the image of quadrilateral PQRS under the following dilations:

The dilation centered at R with scale factor 2.

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3.

On graph paper, sketch the image of quadrilateral PQRS under the following dilations:

The dilation centered at O with scale factor \frac{1}{2}.

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4.

On graph paper, sketch the image of quadrilateral PQRS under the following dilations:

The dilation centered at S with scale factor \frac{1}{2}.

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5.

The diagram shows three lines with some marked angle measures.

Find the missing angle measures marked with question marks.

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6.

Describe a sequence of translations, rotations, and reflections that takes Polygon P to Polygon Q.

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7.

Point B has coordinates (-2,-5). After a translation 4 units down, a reflection across the y-axis, and a translation 6 units up, what are the coordinates of the image?