Answer:

1. Smallest Angle: ∠A Largest Angle: ∠B

2. Smallest Angle: ∠E Largest Angle: ∠D

3. Smallest Angle: ∠H Largest Angle: ∠I

4. Smallest Angle: ∠K Largest Angle: ∠J

5. Smallest Angle: ∠O Largest Angle: ∠N

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