page 63 of note * There is often apparent doubt ; but it will usually be found that this is due to an attempt to estimate the want of truth of the circle as drawn.

page 65 of note * It is no good to say, “ Come now, what is an angle? ” Appeal first to the tangible fact in the child’s mind by saying, “Cannot you see that those corners must fit? ” and then remind him that “equal angles” merely means the same thing.