The answer is reduction. This can be found by the size and number differences in the two quadrilaterals.
Answer:
21.3 unit
Step-by-step explanation:

unit
Answer:
the answer is b=7
b
=
−
7
b
−
12
=
−
61
=
=
−
61
Step-by-step explanation:
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Answer:
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Step-by-step explanation:
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