Illustration of an xy grid/graph. It is the Cartesian coordinate system with the x- and y-axes labeled…

Illustration of an xy grid/graph with grid lines shown. It is the Cartesian coordinate system with the…

Illustration of an xy grid/graph. It is the Cartesian coordinate system with even increments from -10…

Illustration of an xy grid/graph with grid lines shown. It is the Cartesian coordinate system with even…

Illustration of an xy grid/graph. It is the Cartesian coordinate system with the x- and y-axes and increments…

Illustration of an xy grid/graph with grid lines shown. It is the Cartesian coordinate system with the…

Illustration of an xy grid/graph. It is the Cartesian coordinate system with increments from -10 To…

Illustration of an xy grid/graph with grid lines shown. It is the Cartesian coordinate system with increments…

Illustration of an xy grid/graph. It is the Cartesian coordinate system with increments from -10 To…

Illustration of an xy grid/graph with grid lines shown. It is the Cartesian coordinate system with increments…

Illustration of an xy grid/graph. It is the Cartesian coordinate system with increments from -10 To…

Illustration of an xy grid/graph with grid lines shown. It is the Cartesian coordinate system with increments…

Illustration of an xy grid/graph. It is the Cartesian coordinate system with some increments from -10…

Illustration of an xy grid/graph with grid lines shown. It is the Cartesian coordinate system with some…

Illustration of an xy grid/graph. It is the Cartesian coordinate system with the x- and y-axes and even…

Illustration of an xy grid/graph with grid lines shown. It is the Cartesian coordinate system with the…

Illustration of an xy grid/graph. It is the Cartesian coordinate system with the x- and y-axes and odd…

Illustration of an xy grid/graph. It is the Cartesian coordinate system with the axes and some increments…

Illustration of an xy grid/graph. It is the Cartesian coordinate system with the axes and some increments…

Illustration of an xy grid/graph. It is the Cartesian coordinate system with the x- and y-axes labeled…

Illustration of an xy grid/graph. It is the Cartesian coordinate system with even increments from -5…

Illustration of an xy grid/graph with grid lines shown. It is the Cartesian coordinate system with even…

Illustration of an xy grid/graph. It is the Cartesian coordinate system with the x- and y-axes and increments…

Illustration of an xy grid/graph. It is the Cartesian coordinate system with increments from -5 to 5…

Illustration of an xy grid/graph. It is the Cartesian coordinate system with increments from -5 to 5…

Illustration of an xy grid/graph. It is the Cartesian coordinate system with odd increments from -5…

Illustration of an xy grid/graph with grid lines shown. It is the Cartesian coordinate system with odd…

Illustration of an xy grid/graph. It is the Cartesian coordinate system with some increments from -5…

Illustration of an xy grid/graph. It is the Cartesian coordinate system with some increments at -5 to…

Illustration of an xy grid/graph with grid lines shown. It is the Cartesian coordinate system with some…

Illustration of an xy grid/graph with grid lines shown. It is the Cartesian coordinate system with some…

Illustration of an xy grid/graph. It is the Cartesian coordinate system. Neither axis is labeled.

Illustration of an xy grid/graph with grid lines shown. It is the Cartesian coordinate system. Neither…

Illustration of an xy grid/graph with grid lines shown. It is the Cartesian coordinate system. Neither…

Illustration of an xy grid/graph. It is the Cartesian coordinate system with both axes labeled.

Illustration of an xy grid/graph with grid lines shown. It is the Cartesian coordinate system with both…

Illustration of an xy grid/graph with grid lines shown. It is the Cartesian coordinate system with both…

Illustration of the intersection of a hexagonal pyramid and a plane.

Diagram depicting a cone with both nappes intersected by plane J to form a hyperbola.

"Suppose two inclined planes, of the same height, with bases of different lenghts; then the weight and…

Illustration of an irregular surface abdc projected upon the flat surface ABCD.

"If from the foot of a perpendicular to a plane a straight line is drawn at right angles to any line…

"All the perpendiculars to a straight line at the same point lie in a plane perpendicular to the line."

Projections of a line inclined to both the horizontal and vertical planes will not show its true length,…