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#isosceles triangle #trumpet #orchestral #cello #opera

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#AMN #triangle #isosceles triangle

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#triangle #triangular #trigonometry #right triangle #hypotenuse #isosceles triangle #isosceles #acute triangle #dimension

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#triangles #evil eye #isosceles triangle

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#isosceles triangle #trumpet #orchestral

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#golden ratio #phi #sublime triangle #isosceles triangle

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#isosceles triangle #equal sides #two equal sides