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Instructional Video

Khan Academy: Triangles: Equilateral Triangle Sides and Angles Congruent

Curated by ACT

A video showing that all of the angles of an equilateral triangle are 60 degrees. The proof is written as a two-column proof.

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CCSS: Adaptable
Concepts
triangles
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Additional Tags
angles of equilateral triangle, equilateral triangle, khan academy, isosceles triangle, two-column proof
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Resource Details
Grade
9th - 10th
Subjects
Math
2 more...
Resource Type
Instructional Videos
Audiences
For Administrator Use
2 more...
Lexile Measures
0L
Common Core
HSG-CO.D.13