8. x=18. 18-7=11
answer: every polygon is either convex or concave. the difference between convex and concave polygons lies in the measures of their angles. for a polygon to be convex, all of its interior angles must be less than 180 degrees. otherwise, the polygon is concave.
answer:a = 600√3 cm²
diagonals divide a regular hexagon into six equilateral triangles (look at the picture).
the formula of an area of an equilateral triangle with side a:
substitute a = 20 cm:
the area of a regular hexagon is equal six times the area of a triangle:
1. x - 3.5 + 14.9
2. x - 2.8 = 9.5
3. x - 8...