EXPLORE
LATEST
ABOUT
AUTHORING AREA
PARTICIPATE
Your browser does not support JavaScript or it may be disabled!
Subscribe to RSS feed
Triangles
«
PREVIOUS

1
...
2

3

4

5

6

7

8
...
29

NEXT
»
Demonstrations 81  100 of 577
Inscribed and Circumscribed Spheres of a Tetrahedron
Two Conditions for a Tetrahedron to Be Orthocentric
Properties of Isosceles Tetrahedra
The Nagel Line
RightAngled Tetrahedron
Spherical Cosine Rule for Angles
Altitude of a Tetrahedron Given Its Edges
Tiling a Sphere with Special Right Triangles
Tiling with Spherical Triangles of Area Pi
Menelaus' and Ceva's Theorem for Spherical Triangle
A Visual Proof of Thales's Intercept Theorem
Two Equidecomposable Triangles
Spherical Right Triangles
Four Theorems on Spherical Triangles
Dissection of a Spherical Equilateral Triangle into Three Isosceles Triangles
Relations between Plane Angles and Solid Angles in a Trihedron
Supplementary Solid Angles for Trihedron
Euclid's Formula and Properties of Pythagorean Triples
Gerwien's Simultaneous Dissection of Three Triangles of Same Area
Fate of the Euler Line and the NinePoint Circle on the Sphere
«
PREVIOUS

1
...
2

3

4

5

6

7

8
...
29

NEXT
»
Note: To run this Demonstration you need Mathematica 7+ or the free Mathematica Player 7EX
Download or upgrade to
Mathematica Player 7EX
I already have
Mathematica Player
or
Mathematica 7+