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Unit Plan

The Math Page: Trigonometry: The Isosceles Right Triangle

Curated by ACT

Here is a site that clearly and thoroughly explains the trigonometry of a 45-45-90 right triangle. There are example problems solved, problems for the student to attempt, and answers to the student problems. Point this site out to students who have been absent or who need additional instruction on this or many other topics.

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CCSS: Adaptable
Additional Tags
45-45-90, isosceles right triangle, trigonometry: the isosceles right triangle, special right triangle, 45-45-90 triangle, right triangle
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Classroom Considerations
  • Knovation Readability Score: 2 (1 low difficulty, 5 high difficulty)
Common Core
HSG-SRT.C.8 HSG-SRT.C.6