Question

3. Select the angles that identify an obtuse triangle. Mark all

that apply.

A

acute, acute, acute

(B

acute, acute, obtuse

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right, acute, acute

D

obtuse, right, acute

1

Answer 1

Answer: Choice B only

Step-by-step explanation:

• A. If all 3 angles are acute, then the triangle overall is acute.
• B. We have one obtuse angle, so the triangle is obtuse. It is impossible to have more than one obtuse angle. The other two angles must be acute.
• C. This is a right triangle because of the right angle (aka 90 degree angle). It's impossible to have an obtuse angle for any right triangle.
• D. This triangle isn't possible. Refer to parts B and C.