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Step 1: Solve Question 1.
A parallelogram has opposite angles equal and consecutive angles supplementary (sum to 180∘).
Given one angle is 37∘.
The angle opposite to it is also 37∘.
The consecutive angles are 180∘−37∘=143∘.
So, the other three angles are 143∘, 37∘, and 143∘.
The sizes of its other three angles are 143∘,37∘,143∘.
Step 2: Solve Question 2.