how many acute angles are in an acute triangle? 0 2 1 3

QUESTION IMAGE

Question

Explanation:

Step1: Define acute angle

An acute angle is $0^\circ < \theta < 90^\circ$.

Step2: Define acute triangle

An acute triangle has all 3 angles acute, since the sum of triangle angles is $180^\circ$. If all angles are less than $90^\circ$, their sum is $180^\circ$.

Answer:

3