Special right triangle
Right triangle with a feature making calculations on the triangle easier
Special right triangle
A special right triangle is a right triangle with some notable feature that makes calculations on the triangle easier, or for which simple formulas exist. The various relationships between the angles and sides of such triangles allow one to quickly calculate some useful quantities in geometric problems without resorting to more advanced methods.
Read on Wikipedia · Image Cmglee, CC BY-SA 3.0
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