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marusya05 [52]
3 years ago
14

ABCD is a quadrilateral.

Mathematics
2 answers:
wariber [46]3 years ago
4 0

6x+90=360

6x=270

x=45

No lines are not parallel

weqwewe [10]3 years ago
3 0

Answer:

A) 45=x

B) Yes, since both A and B are 90°

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