topic 11 triangles and polygons
... Is the parallel postulate necessary in this proof? (We use this as the parallel postulate: If corresponding angles are congruent, then lines are parallel.) As an implication of this fact, we accept as true the fact that there is only one line through a point which is parallel to a given line. We wil ...
... Is the parallel postulate necessary in this proof? (We use this as the parallel postulate: If corresponding angles are congruent, then lines are parallel.) As an implication of this fact, we accept as true the fact that there is only one line through a point which is parallel to a given line. We wil ...
Special pairs of semi-bilogic and bilogic tetrahedra
... (o.c.) of the 2 tetrahedra (X), we observe that the join of the 2 ox. of any special pair of bilogic tetrahedra is parallel to those of their corresponding vertices by an argument similar to that for the join of a pair of corresponding s.o.c. of any special pair of semi-bilogic tetrahedra such that ...
... (o.c.) of the 2 tetrahedra (X), we observe that the join of the 2 ox. of any special pair of bilogic tetrahedra is parallel to those of their corresponding vertices by an argument similar to that for the join of a pair of corresponding s.o.c. of any special pair of semi-bilogic tetrahedra such that ...
