Which of the following triangles are scalene triangles?
For triangle I, it has three sides of unequal lengths. Hence, it is a scalene triangle.
As for triangle II, it is not a scalene triangle. This is because two of its sides have the same length (9.3cm).
As for triangle III, all of its internal angles are different. Therefore, it is a scalene triangle.
For triangle IV, its internal angles are 60° each. This means that all the sides of the triangle have the same length. Hence, this is not a scalene triangle.
Clearly, only triangle I and III are scalene triangles. Therefore, the answer is A.
Join our FB group to download ZapZapMath Free today!
Join our Facebook Group
No Thanks. My Kids Don't Need To Learn Math