## acute triangle

### An acute triangle is a type of triangle in which all three angles are acute angles, meaning they are less than 90 degrees

An acute triangle is a type of triangle in which all three angles are acute angles, meaning they are less than 90 degrees. In other words, the measures of all the angles in an acute triangle are between 0 and 90 degrees.

In an acute triangle, the sum of the three angles will always be less than 180 degrees. Since each angle is less than 90 degrees, the triangle appears to be “pointed” or “sharp” rather than “flat” or “wide”. The sides of an acute triangle are typically shorter in length compared to other types of triangles.

Properties of acute triangles include:

1. Each of the three interior angles is acute, which means they are all less than 90 degrees.

2. The sum of the measures of these three angles is always less than 180 degrees.

3. The lengths of the three sides can vary, but in an acute triangle, the longest side will always be opposite the largest angle, and the shortest side will be opposite the smallest angle.

4. The altitude drawn from any vertex of an acute triangle will lie entirely within the triangle.

5. The circumcenter (the center of the circle that passes through all three vertices) will always lie inside the triangle.

Acute triangles have various applications in geometry, trigonometry, and engineering. They are commonly encountered in problems involving angles of elevation or depression, as well as in analysis of trigonometric functions and the geometric properties of triangles in general.

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