Triangles: Acute, Right, and Obtuse
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Drag the orange vertex to reshape the triangle.[more]
A triangle is:
acute if all of its angles are less than 90°;
right if one of its angles is 90°;
obtuse if one of its angles is greater than 90°.[less]
Contributed by: Jay Warendorff (March 2011)
Open content licensed under CC BY-NC-SA
"Triangles: Acute, Right, and Obtuse"
Wolfram Demonstrations Project
Published: March 7 2011