Answer:
1) COB and DOC
2) EOC and AOC
3) AOB, AOE, EOD, and BOD
4) BOE and AOD
Explanation:
An acute angle less than 90 degrees
An obtuse more than 90 degrees
A right angle is 90 degrees
A straight angle is a 180 degrees
1: CD and BC
2: CE and AC
3: AE , AB , BD, DE
4: AD and BE
There you go!
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