Consider a few triangles with the following characteristics, categorize them according to their number of sides and of angles:

- Triangle with three interior angles of less than $$90^\circ$$ and with three equal sides.
- Triangle with an interior angle higher than $$90^\circ$$ and two equal sides.
- Triangle with an angle of $$90^\circ$$ and three different sides.
- Triangle with an angle of $$90^\circ$$ and two equal sides.
- Triangle with an angle of less than 90º and two equal sides.
- Triangle with an interior angle higher than $$90^\circ$$ and two equal sides.

See development and solution

### Development:

Theoretical exercise.

### Solution:

- Acute angled equilateral.
- Obtuse angled isosceles.
- Rectangular scalene.
- Rectangular Isosceles.
- Acute angled isosceles.
- Obtuse angled isosceles.