a regular pentagon has what type of symmetry
Pentagon A regular pentagon has five lines of reflectional symmetry, and rotational symmetry of order 5 (through 72째, 144째, 216째 and 288째). The diagonals of a convex regular pentagon are in the golden ratio to its sides. Its height (distance from one side to the opposite vertex) and width (distance between two farthest separated points, which equals the diagonal length) are given by
Equilateral triangle In geometry, an equilateral triangle is a triangle in which all three sides are equal. In the familiar Euclidean geometry, equilateral triangles are also equiangular; that is, all three internal angles are also congruent to each other and are each 60Â°. They are regular polygons, and can therefore also be referred to as regular triangles.