S = (a + b + c) / 2 Based on the sides and the interior angles of a triangle, there are different types of triangle. https://www.euston96.com/en/scalene-triangle/. Equilateral triangles are triangles with three equal sides and angles. A triangle is any polygon with three sides, with the smaller angle measures of the intersections of the sides summing to 180 degrees. An example of a scalene triangle is as follows: Briceño V., Gabriela. Lester proved the result by using the properties of complex numbers; subsequent authors have given elementary proofs , proofs using vector arithmetic, and computerized proofs. the side opposite the right angle) has length greater than that of either leg. In a right triangle, the hypotenuse (i.e. On the other hand, triangles can be defined into four different types: the right-angles triangle, the acute-angled triangle, the obtuse angle triangle, and the oblique triangle. Find the altitude to the longest side. The height can be calculated when a side (b) is known and the height (h) associated with that side. **_A_ = ½(30)(20)** **_A_ = 300 square inches** Area of Scalene Triangle. Area of the triangle =  \(A = \sqrt{s (s-a)(s-b)(s-c)}\) square units, Where, s is the semi perimeter of a triangle, which can be found using the formula, a, b, and c denotes the sides of the triangle. 2. The triangles are defined based on their sides and angles. The triangle inequality theorem states that any side of a triangle is always shorter than the sum of the other two sides. Recovered on 6 January, 2021, de Faqs.Zone: https://www.euston96.com/en/scalene-triangle/, Calculating the sides of a scalene triangle. Thus, it meets the angle sum property condition of triangle. Among the different kinds of polygons, there are triangles: polygons formed by three segments (sides). Find the area and perimeter of a triangle, for the length of three sides, given below: Download BYJU’S – The Learning App and learn all the Maths topics from personalised videos. Equilateral: \"equal\"-lateral (lateral means side) so they have all equal sides 2. 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