Standard deviation, variance, arithmetic mean.
Rectangle - diagonals, area, perimeter, sides.Polygon - diagonals, height, area, perimeter, sides.Pentagon - diagonals, area, perimeter, sides.Parallelogram - diagonals, area, perimeter, sides.Octagon - diagonals, area, perimeter, sides.Isosceles trapezoid - diagonals, height, area, perimeter, sides.Hexagon - diagonals, area, perimeter, sides.Heptagon - diagonals, area, perimeter, sides.Deltoid, kite concave, dart, arrowhead - diagonals, area, perimeter, sides.Deltoid, kite - diagonals, area, perimeter, sides.Cone - volume, area, generatrix, radius of base.Fraction calculator - subtracting fractions step by step with explanation.Fraction calculator - multiplying fractions step by step with explanation.Fraction calculator - dividing fractions step by step with explanation.Fraction calculator - adding fractions step by step with explanation.