The golden ratio | Introduction to Euclidean geometry | Geometry | Khan Academy

The golden ratio | Introduction to Euclidean geometry | Geometry | Khan Academy

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Khan Academy • 635K views

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Math topics:
_Mathematical_constants_##Mathematical constants##_Imaginary_unit_##Imaginary unit##_Golden_rectangle_##Golden rectangle##_Pentagram_##Pentagram##_Golden_ratio_##Golden ratio##_Mathematical_symbols_##Mathematical symbols##_Plus-minus_sign_##Plus-minus sign##_Plus_and_minus_signs_##Plus and minus signs##_Equals_sign_##Equals sign##_Irrational_numbers_##Irrational numbers##_Pi_##Pi##_Square_root_of_5_##Square root of 5##_Irrational_number_##Irrational number##_Elementary_shapes_##Elementary shapes##_Altitude_(triangle)_##Altitude (triangle)##_Rectangle_##Rectangle##_Pentagon_##Pentagon##_Equations_##Equations##_Quadratic_equation_##Quadratic equation##_Quadratic_formula_##Quadratic formula##_Equation_##Equation##_Elementary_mathematics_##Elementary mathematics##_Square_(algebra)_##Square (algebra)##_Function_(mathematics)_##Function (mathematics)##_Square_root_##Square root##_Algebra_##Algebra##_Coefficient_##Coefficient##_Subtraction_##Subtraction##_Line_segment_##Line segment##_Group_theory_##Group theory##_1_(number)_##1 (number)##_Number_##Number##_Order_(group_theory)_##Order (group theory)
Other topics:
_Physical_quantities_##Physical quantities##_Right_angle_##Right angle##_Length_##Length##_Height_##Height##_Letters_by_script_##Letters by script##_Phi_##Phi##_Greek_alphabet_##Greek alphabet##_He_(letter)_##He (letter)
video-id: 5zosU6XTgSY channel_Khan_Academy_