A plane rectilineal angle is formed by two straight lines which meet one another, but are not in the same straight line; it may be considered the degree of opening or divergence of the two straight lines which thus meet one another.
One of the elements of reference by which a point, as of a curve, is referred to a system of fixed rectilineal cordinate axes.
Rectilineal or RightÐlined angle, one formed by two right lines.
When in passing from one medium to another, they are inflected or diverted from their rectilineal course, they are said to be refracted; and this property of light is called its refrangibility.
To deduce the laws of the heavenly motions, we require not only to know the law of a rectilineal and that of a gravitative force, but the existence of both these forces in the celestial regions, and even their relative amount.
Yet the law of the parabolic motion would be resolvable into the very same simple laws into which that of the elliptical motion is resolved, namely, the law of the permanence of rectilineal motion, and the law of gravitation.
In fact, I am not sure of having ever seen an equilateral or rectilineal triangle.
Suppose the field to be divided, the objects to be classified, are three-sided rectilinealplane figures, each group must be based upon some modification of the three sides.
Newton began by an assumption that the force which at each instant deflects a planet from its rectilineal course, and makes it describe a curve round the sun, is a force tending directly toward the sun.
Many had thought, as the vulgar always do, that a continuance of rest was natural to bodies, but did not perceive that the same principle of inertia or inactivity was applicable to them in rectilineal motion.
The method by which they approximated to the curve space by continual increase or diminution of the rectilineal figure was called exhaustion, and the space itself is properly called by later geometers the limit.
Descartes, however, is the first who laid down the laws of motion; especially that all bodies persist in their present state of rest or uniform rectilineal motion till affected by some force.
The parabolas have infinite branches, but no rectilineal asymptotes.
A solid figure contained by a plane rectilineal figure as base and several triangles which have a common vertex and whose bases are sides of the base.
How to put a Given Triangle or otherRectilineal Figure into Perspective 104 LVI.
Any other triangle or rectilineal figure can be worked out in the same way, which is not only the simplest method, but it carries its mathematical proof with it.
Yet the law of the parabolic motion would be resolvable into the very same simple laws into which that of the elliptical motion is revolved, namely, the law of the permanence of rectilineal motion, and the law of gravitation.
The complete elements of Plane Geometry, measuration of rectilineal figures and of the circle, transformation and division of figures; the first elements of the application of Algebra to Geometry.
Another problem solved by the Pythagoreans is that of drawing a rectilineal figure equal in area to one given rectilineal figure and similar to another.
Having a shape broad for the height, with rectilineal and angular rather than curving outlines; as, a man of a square frame.
Similar rectilineal figures, such as have their several angles respectively equal, each to each, and their sides about the equal angles proportional.
Defn: A solid figure contained by a plane rectilineal figure as base and several triangles which have a common vertex and whose bases are sides of the base.
The rectilineal propagation of light may be illustrated by permitting the solar light to enter, through a small aperture in a window-shutter, a dark room in which a little smoke has been diffused.
They assured themselves of the rectilineal propagation of light, and that the angle of incidence was equal to the angle of reflection.
The ancients were aware of the rectilineal propagation of light.
The following instructive experiment depends on the rectilineal propagation of light.
Every body continues in a state of rest or of uniform rectilineal motion, unless affected by some extraneous force.
At the commencement of the outside stroke the knee of the employed leg should be a little bent, and gradually brought to a rectilineal position when the stroke is completed.
On a given straight line to describe a rectilineal figure similar and similarly situated to a given rectilineal figure, there follows another fundamental theorem: Prop.
Rectilineal figures which are similar to the same rectilineal figure are also similar to each other, is an immediate consequence of the definition of similar figures.
To describe a rectilineal figure which shall be similar to one given rectilinear figure, and equal to another given rectilineal figure.
From a given circle to cut off a segment containing an angle equal to a given rectilineal angle.
On a given straight line to describe a segment of a circle containing an angle equal to a given rectilineal angle; Prop.
A ring-plain, 33 miles in diameter, which displays a considerable departure from the circular type, as the border is in great part made up of rectilineal sections.
The outline of Cassini is clearly polygonal, being made up of several rectilineal sections.
This formation exhibits a marked departure from the circular type, being bounded by rectilineal sides.
