G
o
o
g
l
e
×
Please click
here
if you are not redirected within a few seconds.
All
Images
Videos
Maps
News
Shopping
Books
Search tools
Any time
Any time
Past hour
Past 24 hours
Past week
Past month
Past year
All results
All results
Verbatim
Disphenoid
View all
In geometry, a disphenoid is a tetrahedron whose four faces are congruent acute-angled triangles. It can also be described as a tetrahedron in which every two edges that are opposite each other have equal lengths.
Wikipedia