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Pythagoras²Equation Solver
Navigationa² + b² = c²
Geometria Spiegata Intuitivamente

Dimostrazioni Visive del Teorema di Pitagora Senza Parole

You do not need dense symbolic algebra to understand why a² + b² = c² is always true. When you move identical puzzle pieces inside a fixed square frame, the leftover empty space stays constant. Need fast numerical side lengths or angle values instead? Try our Pythagoras equation solver right away.

Proof rearrangement at 100 percent with legs a=3 and b=4. Uncovered area is a squared plus b squared equals 25.
Interactive Geometric Proof Without Words

Bhaskara & Rearrangement Area Slider

100%
0%: Two Squares (a² + b²)100%: Tilted Square (c²)
Adjust Triangle Sides
a² = 9
b² = 16
Outer Square = (3 + 4)² = 49
4 Identical Triangles = 4 × (½·3·4) = 24
Remaining Uncovered Area = 9 + 16 = 25 = c²
c² = 25

Slide between 0% and 100%: because none of the 4 colored triangles change size, the remaining white/highlighted space in both configurations has equal area (a² + b² = c²).

Geometria Chiara: Perché il Cursore Dimostra a² + b² = c²

Step 1: Fixed Puzzle Board

The Outer Box Never Changes Size

Imagine a wooden tray whose width and height equal leg a plus leg b. Inside that tray sit four identical right-angled triangle tiles—never stretched, trimmed, or duplicated as you drag the slider.

Step 2: Conservation of Empty Space

c² Has Identical Area to a² + b²

At 100%, the four triangles frame one tilted center square of side c (area c²). Sliding them to 0% merges two pairs of triangles into neat rectangles—leaving behind two upright empty squares of areas a² and b². Same tray minus same four tiles means equal leftover area: a² + b² = c².

Historical Note: Bhaskara II’s "Behold!" Proof (12th Century India)

Astronomer-mathematician Bhaskara II presented a compact diagram packing four congruent right triangles around the perimeter of a square of side c, leaving an inner center square of side (b - a), and simply wrote a single word beneath the drawing: "Behold!" — trusting visual area conservation to speak louder than pages of symbols.