Answer:
D. Obtuse and scalene
Explanation:
A. There are no right angles (remember right angles are 90 degrees), and all the sides are not equal to each other.
B. No 2 sides are equal, therefore it cannot be isosceles.
C. There are no right angles.
D. The triangle is scalene. There is one angle that is greater than 90 degrees, so this is the answer.
E. There are no right angles and there is an angle above 90 degrees.
Notes:
- Equilateral triangles have 3 equal sides
- Isosceles triangles have 2 equal sides
- Scalene triangles have no equal sides
- Right angles are 90 degrees
- Obtuse angles are above 90 degrees
- Acute angles are below 90 degrees
I hope this helps!!
- Kay :)