Question

a triangle has angle measurements of 15°, 88°, and 77°. what kind of triangle is it? acute right obtuse

Explanation:

Step1: Recall triangle type definitions

• Acute triangle: All angles < 90°.
• Right triangle: One angle = 90°.
• Obtuse triangle: One angle > 90°.

Step2: Check each angle

• \(15^\circ < 90^\circ\), \(88^\circ < 90^\circ\), \(77^\circ < 90^\circ\). All angles are acute.

Answer:

acute