An obtuse-angled triangle has one angle that is greater than 90°. The triangles can be further classified as equilateral close equilateral triangle All sides are equal in length.

An obtuse-angled triangle is a triangle that has one obtuse angle. Acute-angled triangle. In an acute-angled triangle, all three angles are acute. SUBJECTS: Maths. YEARS: 5–6, 7–8.

It categorizes triangles into equilateral, isosceles, scalene, obtuse, right, and acute based on their sides and angles. The video also covers the concept of congruency, demonstrating how two ...

Right-angled Triangle: one of the three interior angle is 90 degree. Obtuse-angled Triangle: ... Therefore, to calculate the area of a triangle, one should have its base and height measurements.