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Mathematics · Measurement & Trigonometry
Right Triangle Explorer, Years 9–10
Students drag triangle vertices and discover how the labels hypotenuse, opposite and adjacent depend on the selected reference angle before progressing into trigonometric ratios. The full interactive is available to licensed Education Universe users.
Years 9–10Explorer
Learning outcomes
- Label the sides of a right triangle relative to a reference angle.
- Explain why side labels change with the reference angle.
Teaching guidance
Switch the reference angle and ask students to relabel the sides before the tool shows them.
Use Right Triangle Explorer with your class
Start a free 30-day trial with class codes and progress tracking, or talk to us about your school's licence.
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Right Triangle Explorer is one of the licensed interactives in The Education Universe. This page describes it; teachers use it in lessons and classes with a licence or the free trial.