Why is the height of a tetrahedron of side length a equal to sqrt(2/3)a
89917
Height of a tetrahedron
55357
Why does drawing $\square$ mean the end of a proof?
138193
Why is $\sqrt {12} = 2 \sqrt 3$?
46621
Relationship between the side lengths of a tetrahedron and an inscribed tetrahedron with vertices at the centroids
34393
Variation of Pythagorean triplets: $x^2+y^2 = z^3$
112319
Sieve of Eratosthenes : why $\sqrt n$ work?
126040
Geometric explanation of $\sqrt 2 + \sqrt 3 \approx \pi$
109900
Why is $e^{\pi \sqrt{163}}$ almost an integer?
127866
Two triangles and their content ratio
106922
Find the height of a square "pyramid" *General Form*
125907
Why does the integral of the surface area of a sphere equal its volume?
57443
Confusion With How Dimensions Work
6707
Why there is a $\frac{1}{2}$ in the distance formula $d=\frac{1}{2}at^2$?
141405
Drawing a tetrahedron from a parellelepiped to convince myself it is 1/6th the volume,
158210
showing $\arctan(\frac{2}{3}) = \frac{1}{2} \arctan(\frac{12}{5})$
148876
What is the meaning of $\mathbf{Q}(\sqrt{2},\sqrt{3})$
22560
Height of Cylinder inscribed in Sphere