Instructional Video

Khan Academy: Geometry: 45 45 90 Triangles

Curated by ACT

In this video tutorial [9:30], the instructor explains the special relationship of the lengths of the sides of a 45-45-90 triangle. Solves an example problem in which the length of a side is known and the length of the hypotenuse must be determined. Practice problems available.

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Additional Tags
45-45-90 triangle, khan academy, khan academy math, special right triangle
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Classroom Considerations
  • Knovation Readability Score: 3 (1 low difficulty, 5 high difficulty)