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Sum Cubes with Triangles (visual proof without words V)

Sum Cubes with Triangles (visual proof without words V)

This is a short, animated (wordless)

Visual proof of infinite geometric series sum

Visual proof of infinite geometric series sum

This is a short, animated

Visual Proof: Squaring a Sum (a+b)²

Visual Proof: Squaring a Sum (a+b)²

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A Visual Attempt at 1 + 2 + 3 + 4 + 5 + ... = -1/12

A Visual Attempt at 1 + 2 + 3 + 4 + 5 + ... = -1/12

I often get requests to give a

A Sum of Squares Double Sum Formula (visual proof; 4K)

A Sum of Squares Double Sum Formula (visual proof; 4K)

This is a short, animated

Geometric series: sum of powers of 1/4 (visual proof)

Geometric series: sum of powers of 1/4 (visual proof)

This is a short, animated (wordless)

Sums of Sums of Squares (visual proof)

Sums of Sums of Squares (visual proof)

This is a short, animated

Sum of odd integers: a generalization (visual proof)

Sum of odd integers: a generalization (visual proof)

This short animated

Sine of a Sum I (visual proof; trigonometry)

Sine of a Sum I (visual proof; trigonometry)

This is a short, animated

A Dramatic Finite Sum : Oblong Numbers II (visual proof without words)

A Dramatic Finite Sum : Oblong Numbers II (visual proof without words)

This is a short, animated (wordless)