Answer:
A. Obtuse
F. Scalene
Explanation:
There are two ways to classify a triangle:
by angles:
Obtuse - has one angle that is greater than 90°
Right - has one angle that is 90°
Acute - has all angles less than 90°
and by side lengths:
Equilateral - all sides are equal
Isosceles - two sides are equal
Scalene - no sides are equal
In this triangle, there is an obtuse angle (A. Obtuse).
∡ = 132°, which is greater than 90°.
There are no equal sides (F. Scalene).
6 ≠ 7 ≠ 11.9