Classify the triangle by side length, and angle measurement

Since no side length or angle measurement has been provided, it is impossible to classify the triangle by side length or angle measurement.

To classify a triangle by side length, we can refer to the following three categories:

1. Equilateral Triangle: All three sides are of equal length.
2. Isosceles Triangle: Two sides are of equal length, while the third side is different.
3. Scalene Triangle: All three sides have different lengths.

To classify a triangle by angle measurement, we can refer to the following three categories:

1. Acute Triangle: All three angles are less than 90 degrees.
2. Right Triangle: One angle is exactly 90 degrees.
3. Obtuse Triangle: One angle is greater than 90 degrees.

It's worth mentioning that a triangle can belong to multiple categories simultaneously. For example, an equilateral triangle is also acute. Similarly, a right triangle can be isosceles if two sides are equal in length.