Acute angle and Oblique angle

Acute angle noun - An angle less than 90 degrees but more than 0 degrees.

Oblique angle and acute angle are semantically related. In some cases you can use "Oblique angle" instead a noun phrase "Acute angle".

Oblique angle noun - An angle that is not a right angle or a multiple of a right angle.

Acute angle and oblique angle are semantically related. Sometimes you can replace phrase "Acute angle" with "Oblique angle", this phrases are similar.