Answer:

1. Polygon - Not Convex(concave)

2. Not Polygon - It has a curve like part.

3. Polygon - Not Convex(concave)

4. Polygon - Not Convex(concave)

5. Not Polygon - The figure is not a 2d enclosed shape.

6. Polygon - Not Convex(concave)

7. Not Polygon - The figure is not a 2d enclosed shape.

8. Polygon - Not Convex(concave)

9. Not Polygon - The figure is not a 2d enclosed shape.

10. Not Polygon - The figure is not a 2d enclosed shape.

Explanation:

POLYGONS

• A polygon is a plane figure that is described by a finite number of straight line segments connected to form a closed polygonal chain. The bounded plane region, the bounding circuit, or the two together, may be called a polygon.

CONVEX POLYGONS

• A convex polygon is defined as a polygon with all its interior angles less than 180°. This means that all the vertices of the polygon will point outwards, away from the interior of the shape. Think of it as a 'bulging' polygon. Note that a triangle (3-gon) is always convex.

CONCAVE POLYGON

• A  concave polygon is a polygon that is not convex. A simple polygon is concave if at least one of its internal angles is greater than. . An example of a non-simple (self-intersecting) polygon is a star polygon. A concave polygon must have at least four sides.

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