## acute triangle

### An acute triangle is a type of triangle where all three angles are less than 90 degrees

An acute triangle is a type of triangle where all three angles are less than 90 degrees. In other words, all angles in an acute triangle are considered to be “sharp” or “smaller” than a right angle.

In an acute triangle, no angle measures exactly 90 degrees or more. All three angles are strictly less than 90 degrees, making the triangle “pointed” or “narrow” in appearance.

Some properties of acute triangles include:

1. All sides of an acute triangle are of different lengths.

2. The longest side in an acute triangle is opposite the largest angle.

3. The sum of all three angles in an acute triangle is always 180 degrees.

4. It is impossible for an acute triangle to have a right angle or an obtuse angle.

5. Acute triangles have a circumcircle, a circle that passes through all three vertices of the triangle.

Overall, an acute triangle is a fundamental concept in geometry and is an essential building block for many advanced mathematical concepts.

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