Question

Which type of triangle has side measures of 6 cm, 7 cm, and 12 cm and one angle with a measure of 120°?

Answer 1

First here we are given all sides of different length 6cm , 7cm and 12cm.

A scalene triangle has the property that all its sides are different.

So this confirms the triangle is scalene for sure.

Now the other information given is one angle is 120 degrees.

120 is an obtuse angle.

So combining the two properties we may say that the triangle is obtuse scalene.

last option obtuse scalene is correct .

Answer 2

Obtuse scalene; there is no such thing as a right scalene or obtuse equilateral