Question

What are all kinds of triangles

Answer 1

Classification of triangles from angles:

-Acute triangle: 3 acute triangles

-Equiangular triangle: 3 congruent acute angles, special kind of acute triangles

-Obtuse triangle: 1 obtuse angle

-Right triangle: 1 right angle

Classification of triangles from sides:

-Equilateral triangle: 3 congruent sides

-Isosceles triangle: at least 2 congruent sides

-Scalene triangle: no congruent sides

Answer 2

There are three types of triangle based on the length of the sides: equilateral, isosceles, and scalene.