A concave hexagon is made when any of the angles within the hexagon are greater than 180 degrees. A regular hexagon cannot be concave, as regular hexagons have interior angles of 120 degrees and exterior angles of 60 degrees. read more
1. A regular hexagon has six equal sides. 2. The six sides of the regular hexagon with the two sides connecting them to the center, form six triangles. 3. The regular hexagon has 6 exterior angles and each one of them is 360/6 = 60 degrees. 4. The 6 interior angles of the hexagon are supplementary to the exterior angle and are 120 deg. read more