Question

is this angle acute, right, or obtuse?
acute right obtuse

Explanation:

Step1: Measure the angle

One ray aligns with $90^\circ$, the other with $70^\circ$. Calculate difference: $90 - 70 = 20^\circ$

Step2: Classify the angle

An acute angle is $0^\circ < \theta < 90^\circ$. $20^\circ$ fits this range.

Answer:

acute