...of " one superficies with another are also lines." 5. A plane superficies is that in which any twc points being taken, the straight line between them lies wholly in that superficies. 6. A plane rectilineal angle is the inclination of two straight lines to one another,...

...straight lines are such as are in the same plane, and being produced ever so far both ways do not meet. A plane surface is that in which any two points being...taken, the straight line between them lies wholly within such surface. In neither of these cases does the definition exhibit a simple analysis of the...

...hath only length and breadth, VI. The extremities of a superficies are lines. vn. A plane superficies is that in which any two points being taken, the straight line between them lies wholly in that superficies. vin. " A plane angle is the inclination of two lines to one another in a plane, which...

...lines ; and surfaces intersect ot cross each other in lines. A plane turf act, or plane, is a surface in which any two points being taken, the straight line between them lies wholly in that surface ; or, it is that surface with which a ¡traiyht line wholly coincides, when applied to it in every...

...intersects another, you will find they do so at the points or pockets still. v. A plane superficies is that in which any two points being taken, the straight line between them lies wholly in that superficies. Example: the headpiece of a young peer, which lies wholly between the Opera-house and...

...is extension in two directions. 6. The extremities, or boundaries, of a surface, are lines. 7. — A plane surface is that in which any two points being taken, the straight line joining them lies wholly in that surface. — HERO THE ELDER. " A plane surface is that which lies...

...hath only length and breadth. VI. The extremities of a superficies are lines. VII. A plane superficies is that in which any two points being taken, the straight line between them lies wholly in that superficies. VIII. ' A plane angle is the inclination of two lines to one another in a plane, which...

...has only length and breadth. VI. The extremities of a superficies are lines. VII. A plane superficies is that in which any two points being taken, the straight line between them lies wholly in that superficies. VIII. A plane angle is the inclination of two lines to one another in a plane, which meet...

...line, which will be considered below. (4) The force of the ancient definition of a plane surface, viz., "that in which, any two points being taken, the straight line between them lies wholly in that surface," becomes apparent. Trendelenberg has suggested that the thought of a plane surface is obtained by conceiving...

...thickness. 6. The extremities of a superficies are lines. 7. A plane surface, (planus, level, flat,) is that in which any two points being taken, the straight line joining them lies wholly in that surface. — HERON. „ " A plane surface is that which lies evenly,...