12	面	O_ABD	$\frac{a b^{2} t v + (a + b c t) s_{A B D}^{2}}{2 s_{A B D}^{2}}$	$\frac{a^{2} b t v + (b + a c t) s_{A B D}^{2}}{2 s_{A B D}^{2}}$	$\frac{a b (a^{2} + b^{2}) d^{2} t}{2 s_{A B D}^{2}}$	$ℝ_{O A B D}^{3}$	$\frac{(a^{2} + b^{2}) (a^{2} + d^{2}) (b^{2} + d^{2})}{4 s_{A B D}^{2}}$
13	面	O_ACD	$\frac{a c^{2} t v + (a + b c t) s_{A C D}^{2}}{2 s_{A C D}^{2}}$	$\frac{a c (a^{2} + c^{2}) d^{2} t}{2 s_{A C D}^{2}}$	$\frac{a^{2} c t v + (c + a b t) s_{A C D}^{2}}{2 s_{A C D}^{2}}$	$ℝ_{O A C D}^{3}$	$\frac{(a^{2} + c^{2}) (a^{2} + d^{2}) (c^{2} + d^{2})}{4 s_{A C D}^{2}}$
14	面	O_BCD	$\frac{b c (b^{2} + c^{2}) d^{2} t}{2 s_{B C D}^{2}}$	$\frac{b c^{2} t v + (b + a c t) s_{B C D}^{2}}{2 s_{B C D}^{2}}$	$\frac{b^{2} c t v + (c + a b t) s_{B C D}^{2}}{2 s_{B C D}^{2}}$	$ℝ_{O B C D}^{3}$	$\frac{(b^{2} + c^{2}) (b^{2} + d^{2}) (c^{2} + d^{2})}{4 s_{B C D}^{2}}$
15	体	O	$\frac{a v + b c t (2 a b c + v)}{2 v}$	$\frac{b v + a c t (2 a b c + v)}{2 v}$	$\frac{c v + a b t (2 a b c + v)}{2 v}$	$ℝ_{O}^{4}$	$\frac{(a^{2} + b^{2} + c^{2} + d^{2}) v^{2} - 4 a^{2} b^{2} c^{2} d^{2}}{4 v^{2}}$