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Coordinates of Equilateral Triangles AssessmentCoordinates of Equilateral Triangles Assessment
Publisher
Illustrative Mathematics
Resource Details
Curator Rating
Educator Rating
Not yet Rated
Grade
9th - 12th
Subjects
Math
1 more...
Resource Types
Assessments
6 more...
Audiences
For Teacher Use
1 more...
Duration
30 mins
Instructional Strategy
Independent Practice
Year
2015
Usage Permissions
Creative Commons
BY-NC-SA: 4.0
cc
Assessment

Coordinates of Equilateral Triangles

Curated and Reviewed by Lesson Planet
This Coordinates of Equilateral Triangles assessment also includes:
  • Solution
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Can it be constructed? The task poses the question whether it is possible to have an equilateral triangle with its vertices located at integer coordinates. Pupils work with their knowledge of trigonometric ratios and the Pythagorean Theorem to determine whether they can build it.

4 Views 4 Downloads
CCSS: Designed

Concepts

coordinate geometry, equilateral, equilateral triangles, pythagorean theorem, coordinate plane, integers, tangent, triangles, cosine, sine

Additional Tags

math

Instructional Ideas

  • Create groups from the class members that attach the problem similarly to share
  • Determine where the points B and C would be if A was at the origin

Classroom Considerations

  • It is beneficial if the class understands how to determine the trigonometric ratios for a 60-degree angle

Pros

  • Includes multiple solutions in the answer key
  • Answer key has links to other tasks that incorporate the same standards

Cons

  • None

Common Core

HSN-RN.B.3 HSF-TF.C.9 HSG-GPE.B.4 HSG-GPE.B.5 HSG-GPE.B.6 HSG-GPE.B.7

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