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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: Is the quadrilateral with vertices \$(-6, 2)\$, \$(-3,6)\$, \$(9, -3)\$, \$(6,-7)\$ a rectangle? Explain....

#### Subjects:

• Mathematics > General
• Education > General

#### Keywords:

Informal Education,Middle School,NSDL,oai:nsdl.org:2200/20131110173437704T,Grade 8,NSDL_SetSpec_ncs-NSDL-COLLECTION-000-003-112-103,High School,Vocational/Professional Development Education,Mathematics,Education

English

#### Access Privileges:

Public - Available to anyone

Creative Commons Attribution Non-Commercial Share Alike

#### Collections:

None
Update Standards?

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

Understand congruence and similarity using physical models, transparencies, or geometry software.

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

Understand and apply the Pythagorean Theorem.

#### CCSS.Math.Content.HSG-CO.B: Common Core State Standards for Mathematics

Understand congruence in terms of rigid motions

#### CCSS.Math.Content.HSG-SRT.B.5: Common Core State Standards for Mathematics

Use congruence and similarity criteria for triangles to solve problems and to prove relationships in geometric figures.

#### CCSS.Math.Content.HSG-GPE.B: Common Core State Standards for Mathematics

Use coordinates to prove simple geometric theorems algebraically
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