Two regular tetrahedrons connected face to face make a "regular triangular dipyramid."
That is one of the 92 "Johnson solids." Those are the convex polyhedrons whose faces are regular polygons but do not belong to either of the two sets of highly symmetric polyhedrons (the Platonic and the Archimedean) or to the perhaps less interesting two infinite families of prisms and antiprisms.
If the two tetrahedrons overlap, both centers at the same place but with the tetrahedrons facing in opposite directions, it makes a "stellated octahedron."
an octahedron: basically two square based pyramids with their bases stuck together.
Two angles which added together make 90o are called Complementary angles
It look like two square based pyramids stuck together on their square sides.
A regular triangular dipyramid. It is one of the 92 "Johnson solids". Those are the convex polyhedra whose faces are regular polygons, but do not belong to either of the two sets of highly symmetric polyhedra (the Platonic and the Archimedean), or to the perhaps less interesting two infinite families of prisms and antiprisms.
A triangular bipryramid (two triangular pyramids stuck together on one face), a parallelepiped (like a squished cuboid), a pentagonal pyramid. A cube or rectangular prism are special cases of a parallelepiped.
More like two tetrahedrons stuck together.
It is impossible to tell. Two possible shapes are a triangular prism, or di-tetrehadron (two tetrahedrons stuck together at their bases).
A hexahedron or a triangular dipyramid. This is the shape formed by two triangular pyramids (tetrahedrons) stuck together along one triangular face.
A triangular dipyramid (two tetrahedrons or triangular pyramids stuck together) has 9 edges and 5 vertices. A parallelepiped (including cuboid) has 12 edges and 8 vertices
It is called interlocking, where two objects become entwined or stuck together after a collision.
Octahedron https://en.wikipedia.org/wiki/Octahedron
an octahedron: basically two square based pyramids with their bases stuck together.
Love bugs are two bugs that are stuck together. They're called love bugs because they're together all the time like a couple.
The force caused by tiny collisions called microwelds on surfaces that are stuck together is called friction. Friction is the resistance to motion when two surfaces are in contact with each other. Microwelds are small points of contact where atoms on the surfaces bond together, creating resistance to movement.
A molecule
Two amplifiers stuck together.
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