Match the terms and definitions. 1. irregular meter using two or more meters simultaneously 2. mixed meter changing meters within a piece of music 3. polymeter asymmetrical beats per measure

Explanation:

In matching the terms with the definitions, we put it thus way:

Irregular meter is a kind of metering that involves asymmetrical form of groupings with certain various numbers of beats per measure in it.

Mixed meter/changing meter definition is correct because it allows composers to place different kind of time signature at the start of each of the bar there by leading to music with an irregular form of rhythmic form of feelings.

The last is the polymeter / polyrhythm which result in two or more relative rhythms sounding concurrently