Instructional Video

Khan Academy: Geometry: Intro to 30 60 90 Triangles

Curated by ACT

Solves an example problem in which the length of the hypotenuse is known and the length of a side must be determined. Explains the special relationship of the lengths of the sides of a 30-60-90 triangle using the Pythagorean theorem. Practice problems available. [9:40]

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CCSS: Adaptable
Additional Tags
30-60-90 triangle, 45-45-90 triangle, khan academy, khan academy math, special right triangle
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Classroom Considerations
  • Knovation Readability Score: 1 (1 low difficulty, 5 high difficulty)