A scalene triangle with angles 90°, 30° and 60° is a scalene right-angled triangle. Image caption, An isosceles triangle with angles of 90°, 45° and 45° is a right-angled triangle.

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 ...

The only way to work out an angle in a scalene triangle is if we know the other two angles. Right-angled triangle. A right-angled triangle is a triangle where one of the angles is 90 degrees.

Scalene triangle: three sides of triangle are equal. Types of Triangle based on the angles . Acute-angled Triangle: ... Hence, Area of A Right Angled Triangle = ½ * b* h sq units.