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Demonstrations 21 - 40 of 46
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
Division of the Opposite Side by an Angle Bisector
The Eyeball Theorem
Equally Distant Chords
Side Lengths Opposite Unequal Angles
Tangents to a Circle
Tangent Chord Angle
Triangles: Scalene, Isosceles, and Equilateral
Triangles: Acute, Right, and Obtuse
Finding the Least Common Multiple of Two Numbers by Factoring
The Ratio Theorem
Finding the Greatest Common Divisor of Two Numbers by Factoring
Intersecting Chords Theorem
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