I’m not sure abt 21 but 22 is the second one and the 4th one. So 2,4.
Answer:
Parallel segments → 1
perpendicular segments → 2
congruent segments → 3

hope it helps...
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Answer:
1176
Step-by-step explanation:
i hope this helps out
You can show it 4 ways by rotating the paper and if that is not an option, then the answer is 2.