Question

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from pic

Answer 1

Step-by-step explanation:

1st one is Concave Polygon

2nd one is simple closed curve

3rd one is Simple closed curve

4th one is simple polygon.

5th one is Convex polygon

6th one is Concave polygon

Answer 2

• 1 and 6 are concave polygon
• 2 and 3 are simple closed curve
• 4 is a simple polygon