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...Class important formulas chapter symmetry if a line divides figure into two parts such that when the is folded about of coincide then known as also axis said to have rotational it fits on itself more than once during full turn i e rotation through number times onto in one called order following table provides details linear and symmetries various figures no rational centre square yes intersection diagonals rectangle equilateral centroid triangle regular hexagon circle unlimited parallelogram rhombus ncert solutions for maths integers ex exercise fractions decimals data handling simple equations lines angles its properties congruence triangles cbse sample papers learncbse comparing quantities numbers practical geometry perimeter area algebraic expressions exponents powers visualising solid shapes rd sharma operations variable ration proportion unitary method percentage profit loss interest constructions mensuration ii collection organisation central values iii construction bar graphs iv...