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A Point.
FIrst, you must understand that a Point is a Prick made with a Pen or Compass, which can∣not be divided into parts, because it containeth neither length nor bredth in it.
A Line.
A Line is a right consecutive Imagination in length, be∣ginning at a Point, and hath no bredth.
A Parallel.
WHen two lines are set or placed a little distance one from the other, those two Lines, according to the Latin phrase, are called Parallel, and by some Equidistances.
Superficies.
WHen these two Lines aforesaid are enclosed at each end with other Lines, it is then called a Superficies, and in like sort all spaces, in what manner soever they are clo∣sed, are called Superficies or Plains.
Perpendicular.
WHen there is a straight upright Line placed in the middle of a cross streight line, then it is called a Per∣pendicular, or Catheta line, and the end of the Crosses or streight line on both sides of the Perpendicular are called streight Corners.
Acutus, Obtusus.
WHen a leaning or streight Line is placed upon a streight line, without Compass or Equallity, as much as the same line bendeth, so much shall the corner of the streight line be narrower below, and the other so much broader as a right and even corner, the straight corner in Latin is called Acutus, which signifieth sharp, and the wider Obtusus, which signifieth dull.
Pyramidal.
A Corner or Point called Pyramidal, and also Acutus in Latin is when two even long streight lines meet or joyn together at the upper end, as the Figure declareth.
Triangle.
When such a Figure, as aforesaid, is closed together at the foot with a long streight line; it is then called a Tri∣angle, because it hath three sharp corners.
2. Triangle.
WHen a Triangle with two even streight lines, is closed together with a longer line then these two are, it shall have such forme as you may see in the Figure of the third Triangle.
3. Triangle.
A Triangle which is made of three unlike lines, will also have three unlike corners.
Quadrangle.
WHen two long and two direct down-right lines are joyned together at the four corners, it is called Qua∣drangle with even sides or corners, but when the four lines are all of unlike and contrary length, then it is a Quadrangle of uneven sides, as the Figure sheweth.
YOu must note, that although all four corner'd Figures may be called Quadrangles; nevertheless, for that the direct four corner'd Figures are called Quadratus, for difference from them, I will name all Figures which are like unto a Table (that is, longer then broad) Qua∣drangles.
WHen four even long streight lines are joyned toge∣ther at the corners, they are called Quadratus; which are four corner'd: when you make the two corners therof sharp; and the other two corners somewhat blunter, then it is called a Rombus.
ALthough you may turn and make all the Figures afore∣said right four square: yet the Workman may find other Figures with divers corners, the which (as I will hereafter shew) he may make four square.
WHen a man with his compass draweth a bowe, and af∣ter that he draweth another bow right against it, that is called a Superficies of crooked lines, with two like corners: and then draweth a streight line from the one corner to the other: and from one point or center where the Com∣pass stood to the other, another streight line; thereby you shall find the right four parts thereof.
BUt if a man draw a whole right line with his Com∣pass, that is called a full Circle or round Superficities, and the point in the middle is calld the Center, the utmost line is called Circumference: and if you draw a streight line through the Center, it is called a Diameter: because it divideth the Circle in two even parts.
WHen the half Circumference is cut through the Cen∣ter of the Diameter, then it is called half a Circle: and if you make a streight line upright in the half Circle, then that line maketh two even quarters of a Circle, and di∣videth the Diameter also into two half Diameters.
WHen a man draweth four even long lines, and joyneth them together, they make a perfect corner'd Quadra∣tus: then if you draw a streight line from the one cor∣ner to the other, it is called Diagonus: because it divi∣deth the four corners into two even parts.