pasagot po asap! need ko na po to today! ;-; ;-; ;-;

Answer:
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16.Congruent
17.Congruent
18.Congruent
19.Supplementary
20.Congruent
first pic: if the angle meet at the same zigzag its congruent but if not its supplementary
second pic : if the angle did not lay on the same zigzag its supplementary