Question

Classify the following triangle. Check all that apply

Answer 1

F. right angle is correct

Answer 2

Answer: The correct choices are D and F.

Explanation:

There are two classifications of triangles shown.

Any triangle can only be two.

The first classification depends on the triangles' angles:

1. Acute triangles are triangles with three angles under 90 degrees.
2. Right triangles are triangles with a right angle.
3. Obtuse triangles are triangles with an obtuse angle.

The second classification depends on the triangles' sides:

1. Equilateral triangles are triangles with three equal side lengths.
2. Isosceles triangles are triangles with two equal side lengths.
3. Scalene triangles are triangles with no equal side lengths.

The triangle given has angles of 36, 54, and 90 degrees. 90 degrees is a right angle, so the triangle is a right triangle.

The triangle given has side lengths of 7, 5.1, and 8.66. No side lengths are equal, so the triangle is a scalene triangle.

The correct choices are D and F.