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# Dilations Observations Worksheet

Product Description
Practice dilating polygons and line segments, along with making observations about lengths, slopes, and y-intercepts with this handout.

Students dilate figures and line segments in four problems, and answer questions related to each one. This activity goes beyond just the making a correct dilation. It ask students to observe characteristics of preimages and images.

Handout is one page. Answer key is included.

Common Core Standards:
CCSS.Math.Content.HSG.SRT.A.1
Verify experimentally the properties of dilations given by a center and a scale factor:

CCSS.Math.Content.HSG.SRT.A.1.a
A dilation takes a line not passing through the center of the dilation to a parallel line, and leaves a line passing through the center unchanged.

CCSS.Math.Content.HSG.SRT.A.1.b
The dilation of a line segment is longer or shorter in the ratio given by the scale factor.

CCSS.Math.Content.HSG.SRT.A.2
Given two figures, use the definition of similarity in terms of similarity transformations to decide if they are similar; explain using similarity transformations the meaning of similarity for triangles as the equality of all corresponding pairs of angles and the proportionality of all corresponding pairs of sides.

CCSS.Math.Content.HSG.SRT.A.3
Use the properties of similarity transformations to establish the AA criterion for two triangles to be similar.

CCSS.Math.Content.8.G.A.3
Describe the effect of dilations, translations, rotations, and reflections on two-dimensional figures using coordinates.

CCSS.Math.Content.8.G.A.4
Understand that a two-dimensional figure is similar to another if the second can be obtained from the first by a sequence of rotations, reflections, translations, and dilations; given two similar two-dimensional figures, describe a sequence that exhibits the similarity between them.

Thank you for your interest in this resource from Rise over Run.

Related Resources:
Using Transformations as an Architect
Transformation Bingo!

Total Pages
3 pages
Included
Teaching Duration
45 minutes
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