Question

classify triangles — quiz — level 0
how many acute angles are in an acute triangle?
3
0
2
1

Explanation:

Step1: Define acute angle/triangle

An acute angle is $0^\circ < \theta < 90^\circ$; an acute triangle has all angles acute.

Step2: Confirm angle count

A triangle has 3 angles total, all acute here.

Answer:

3