how many lines of symmetry has an equilateral triangle
Equilateral triangle An equilateral triangle is the most symmetrical triangle, having 3 lines of reflection and rotational symmetry of order 3 about its center. Its symmetry group is the dihedral group of order 6 D3.
Heptagon In geometry, a heptagon is a seven-sided polygon or 7-gon.
Diagonalizable matrix Note that the above examples show that the sum of diagonalizable matrices need not be diagonalizable.
Slope Thus, a 45° rising line has a slope of +1 and a 45° falling line has a slope of −1.
Paris Peace Accords
Bull riding The flank strap