which is quite flat, or level, like a floor or table. Try to draw a few of these, and when you have done so, draw a little round on each, as at A and B; then ask yourself, If B were the top of a table, would a marble stop on the spot where I place it, or would it roll down? for, you know, that unless the table were perfectly level, the marble would not remain still; so that if the marble in your drawing looks as if it would roll down, you may be sure that your line is not flat, and so you must try again. 5 Oblique Lines. The third sort of line is called OBLIQUE. This name is sounded as if it were spelt "obleek," and you will see by the lines that the name means "slanting." When you have practised some of these, you will know a little about three sorts of lines-the vertical, or upright; the horizontal, or flat; and the oblique, or slanting; so that now you shall try to combine these (that means to join them) so as to form some objects you have seen. Mr. Davidsone G An Oblong. Here is the front of a letter, and you will see that the horizontal lines at the top and bottom are of the same length, but that this pair of lines is longer than the vertical lines forming the left and right edges of the letter, so that the figure is an OBLONG. You must observe, too, that the short edges are quite square with the long ones, and so they form right angles-that means square corners. 63/8 2163 1426 11396 7 When your slate was new, the corners were right angles; but if by accident you have dropped 8 it on one of its corners, and it has been broken, the frame will be forced out of shape, and the angles will no longer be right angles. Here we have the back of the letter we have already drawn, and in drawing this you will have some practice in oblique lines. 10 A Square. When all the four sides of a figure are equal, it is called a square; but you must be very careful that all the four angles are right angles, for if they were like this— that is, all the sides equal, but the lines not at right angles with each other, the figure would not be a square, but a RHOMB-US, or diamond. If 12 A Rhomboid. two sides of the figure are one length, and two another, it is called a RHOM BOID. When you |