Acute Triangle

An acute triangle has all its angles acute, meaning each angle is less than 90°.

In any triangle, the sum of the angles is always 180°.

In an acute triangle, all the internal angles are less than 90°.

An acute triangle can be scalene if all its sides are of different lengths, isosceles if it has two sides of equal length, or equilateral if all its sides are of equal length.

Key Points

Here are some important points about acute triangles:

• Circumcenter
  The circumcenter of an acute triangle is located inside the triangle.
• Orthocenter
  The orthocenter is always found inside an acute triangle.
  
• Centroid
  The centroid is also located inside the triangle.
• Equilateral Triangle
  A special case of an acute triangle is the equilateral triangle, where all sides are equal and each angle is 60°.

And so forth.