are the triangles below acute, obtuse, or right? triangle a triangle b triangle c triangle d acute acute…

Explanation:

Step1: Recall angle - type definitions

An acute - angled triangle has all angles less than 90°. An obtuse - angled triangle has one angle greater than 90°. A right - angled triangle has one angle equal to 90°.

Step2: Analyze Triangle A

All angles in Triangle A are 60°. Since 60°<90°, Triangle A is acute.

Step3: Analyze Triangle B

One angle in Triangle B is 110°. Since 110°>90°, Triangle B is obtuse.

Step4: Analyze Triangle C

One angle in Triangle C is 90°. So, Triangle C is right.

Step5: Analyze Triangle D

One angle in Triangle D is 90°. So, Triangle D is right.

Answer:

Triangle A: Acute Triangle B: Obtuse Triangle C: Right Triangle D: Right