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#### Description:

This is a task from the Illustrative Mathematics website that is one part of a complete illustration of the standard to which it is aligned. Each task has at least one solution and some commentary that addresses important asects of the task and its potential use. Here are the first few lines of the commentary for this task: Triangles \$ABC\$ and \$PQR\$ are shown below in the coordinate plane: Show that \$\triangle ABC\$ is congruent to \$\triangle PQR\$ with a reflection followed...

#### Subjects:

• Mathematics > General
• Education > General

#### Keywords:

Informal Education,oai:nsdl.org:2200/20130211105456362T,Middle School,NSDL,Grade 8,NSDL_SetSpec_ncs-NSDL-COLLECTION-000-003-112-103,Vocational/Professional Development Education,Mathematics,Education

English

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#### Collections:

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Update Standards?

#### CCSS.Math.Content.8.G.A.2: Common Core State Standards for Mathematics

Understand that a two-dimensional figure is congruent to another if the second can be obtained from the first by a sequence of rotations, reflections, and translations; given two congruent figures, describe a sequence that exhibits the congruence between them.

#### CCSS.Math.Content.8.G.A.3: Common Core State Standards for Mathematics

Describe the effect of dilations, translations, rotations, and reflections on two-dimensional figures using coordinates.
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