Types of triangle: 2 Marks
The three types of triangles based on angles are:
(i) A triangle is called Obtuse angled when one of the angles has an angle greater than 90o.
(ii) If all angles of the triangle are less than 90o, it's called an Acute angled triangle.
(iii) If one of the angles is equal to 90o, it's called a Right angled triangle.