+ putStr "prop_tetrahedron16_volumes_positive... "
+ quickCheckWith qc_args prop_tetrahedron16_volumes_positive
+
+ putStr "prop_tetrahedron17_volumes_positive... "
+ quickCheckWith qc_args prop_tetrahedron17_volumes_positive
+
+ putStr "prop_tetrahedron18_volumes_positive... "
+ quickCheckWith qc_args prop_tetrahedron18_volumes_positive
+
+ putStr "prop_tetrahedron19_volumes_positive... "
+ quickCheckWith qc_args prop_tetrahedron19_volumes_positive
+
+ putStr "prop_tetrahedron20_volumes_positive... "
+ quickCheckWith qc_args prop_tetrahedron20_volumes_positive
+
+ putStr "prop_tetrahedron21_volumes_positive... "
+ quickCheckWith qc_args prop_tetrahedron21_volumes_positive
+
+ putStr "prop_tetrahedron22_volumes_positive... "
+ quickCheckWith qc_args prop_tetrahedron22_volumes_positive
+
+ putStr "prop_tetrahedron23_volumes_positive... "
+ quickCheckWith qc_args prop_tetrahedron23_volumes_positive
+