We say that a polygon is concave if it has a section that "points inward You can imagine that this part has " Polygons that are not concave are called convex

Yes, that's correct! A polygon is classified as concave if at least one of its interior angles is greater than 180 degrees, which creates a "dent" or inward-pointing section. This means that if you were to draw a line segment between any two points within the polygon, that line segment would lie outside the polygon for at least one pair of points. On the other hand, a convex polygon has all interior angles less than or equal to 180 degrees, and any line segment drawn between two points inside the polygon will always lie entirely within the polygon. In summary: - **Concave Polygon**: At least one interior angle > 180 degrees; has at least one inward-pointing section. - **Convex Polygon**: All interior angles ≤ 180 degrees; no inward-pointing sections. If you have any further questions or need examples, feel free to ask!