30-60-90 triangles
Halving an equilateral triangle gives a useful set of side ratios.
4 minutes. No sign-up needed.
This lesson is part of the Mathematics course.
Example plan3 lessons · 13 min
45-45-90 triangles3 min
30-60-90 trianglesRight-triangle side relationships4 min
Challenge: Right-triangle side relationshipsRight-triangle side relationships6 min
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