To be tangent to a circle or arc, a line must touch the circle or arc at only one point, and a line drawn from the center of the circle or arc must be perpendicular to the tangent line at the point of tangency. (See Figure 6.82.)

To be sure, until now they had always shared and shared alike, but here was the first great lump of good-luck that had ever fallen in his way, and he was not for spoiling it by cutting it in two to give half to a poor beggar-man such as his brother.

So many things, however, are a genuine heartbalm like the prickles of the Pleiades rising on the night.

They apparently have a theory that the indefinable psychic gift that they call magic, and which we might designate psychicism, can be acquired by accosting the soul of a murdered man in a burial ground at midnight.