
Based on the measure of sides, triangles are classified as equilateral triangles, scalene triangles and isosceles triangles. Based on the measure of its interior angles, there are three types of triangles namely, acute triangle, obtuse triangle and right triangle.
A scalene triangle is a 3-sided closed polygon. It has three sides of unequal length. No side is equal to the other in measurement. This also implies that all the angles present on the vertices of the triangle are unequal. Since the sides of a scalene triangle are different, the angles corresponding to the sides are also different. The angle opposite to the largest side is the largest of the three angles. Similarly, the angle opposite to the smallest side is also the smallest. For example,
ABC is a scalene triangle with all the sides different from each other.
AB ≠ BC ≠ CA
Also,
∠ABC ≠ ∠BCA ≠ ∠CAB
A scalene triangle has the following properties:
The area of a scalene triangle can be calculated by different methods as discussed below:
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