Euclid's Elements
Demonstrations 1 - 20 of 43
 |  |  |  | | Greek Numerals | Inscribed and Central Angles in a Circle | Angle Bisector Theorem | Extended Euclidean Algorithm |
 |  |  |  | | The Euclidean Algorithm and Simple Continued Fractions | Square of a Sum | Proposition 7, Book XII, Euclid's Elements | Proposition 3, Book XII, Euclid's Elements |
 |  |  |  | | Any Triangle Can Tile | Proposition 30, Book XI, Euclid's Elements | Proposition 29, Book XI, Euclid's Elements | Proof of Proposition 28, Book XI, Euclid's Elements |
 |  |  |  | | Euclid's Proof of the Pythagorean Theorem | The Perpendicular Bisector of a Chord | The Chordal Theorem | How the Altitude Divides the Hypotenuse |
 |  |  |  | | Dividing a Right Triangle by the Altitude to the Hypotenuse | The Area of a Triangle as Half a Rectangle | Inscribed Angles That Intercept the Same Arc | Tangent Circles |
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