Answer:
See below ~
Explanation:
What are triangles?
Triangles are characterized as polygons having 3 sides, an angle sum of 180 degrees, and 3 vertices.
Classification
By side lengths :
1. Scalene
⇒ possess unequal side lengths
2. Isoceles
⇒ Possess 2 equal side lengths
3. Equilateral
⇒ All side lengths are equal
By angles :
1. Obtuse
⇒ Contains an angle over 90°
2. Acute
⇒ All angles are less than 90°
3. Right
⇒ One angle is equal to 90°