Quadrilateral with the four sides unequal, and none of them perfectly parallel.
Quadrilateral with the sides equal, but with two opposite angles acute, and two obtuse.
Quadrilateral with the sides equal and the angles right angles.
Given a line which coincides with but one side of the picture it becomes necessary for the poise of the quadrilateral to cross it with an opposing line.
There are ten quadrilateral prisms, the largest of which has a base of 10 centimetres, the others decreasing by 1 centimetre.
It would be possible to have an idea of the form of the quadrilateral without knowing how to count to four, and, therefore, without appreciating the number of sides and angles.
A right-lined quadrilateral figure, whose opposite sides are parallel and, consequently, equal.
An equilateral parallelogram or a quadrilateral figure whose sides are equal and the opposite sides, B, B, parallel.
The polar plumes due at minimum were combined in it with the quadrilateral ogives belonging to spot-maxima.
When sun-spots are numerous, the corona appears to be most fully developed above the spot-zones, thus offering to our eyes a rudely quadrilateral contour.
B Company--Communication trench leading from theQuadrilateral back to third trench.
From the 6th Division on the left, shortly after midday came the cheering news that the Quadrilateral had at last fallen, together with the trench to the north of it.
Almost immediately the company was ordered forward to relieve the 2nd Londons in the communication trench leading to the rear from the Quadrilateral held by C Company.
Thus, he notices the quadrilateral shape of the parietal bones; he distinguishes the squamous, the styloid, the mastoid and the petrous portions of the temporal bones; and he remarks the peculiar situation and shape of the sphenoid bone.
Thus a small and highly elevated portion of the state extends eastwards from its extreme north-eastern corner, and is attached to the great Afghan quadrilateral by the thin link of the Panja valley.
That this length is contained within the quadrilateral aforesaid, is proved by the proportion borne by these parallels to the equator.
Thus the figure [of Italy] may be said to be rather quadrilateral than trilateral, and can never without impropriety be called a triangle.
It is with justice too that he attributes to it the form of a quadrilateral or rhomboid.
Peduncle, about twice as long as the capitulum; the scales of the uppermost whorl are quadrilateral (fig.
The orbital orifice represents a quadrilateral figure more or less irregular, more or less angular or rounded, the length and breadth of which can be measured.
The relation of this height to the breadth = 100, or the orbital index, expresses in figures the form of the more or less shallowquadrilateral of the orbit.
The Arabians thought that the four stars in the quadrilateral represented a bier, and the three in the "tail" the children of the deceased following as mourners!
Most of the ruins now visible belong to the mediaeval fortress of the Dukes of Tusculum, and a few only of the quadrilateral blocks of the ancient enclosure are visible.
A little farther to the north-east is a quadrilateral court, 200 feet wide, which was surrounded by a portico with Corinthian columns.
The most conspicuous ruin near the church is the archway called Janus Quadrifrons, from its quadrilateral shape.
On the eastern side are more rooms, and a magnificent quadrilateral covered way.
They form an enormous quadrilateral terrace, round which a portico of granite columns ran.
Martino, where it was strengthened at the time of the Punic wars with additions of quadrilateral structure, and where an ancient gate now closed may be seen.
These Mueller briefly represents as an embankment fifty feet high, enclosing a quadrilateral space, on which embankment were two pyramids or mounds.
At the side of this tumulus was a quadrilateral elevation covering an area of about two acres, and enclosed by a wall eight feet high and twelve feet thick.
His plate shows regular quadrilateral openings in the parapets, while in Castaneda's plate they appear of irregular form, as if made by the removal of stones.
A non-existent all-perfect Being is as inconceivable as a quadrilateral triangle.
In our opinion, it is like speaking of a circular ellipse, or of a quadrilateral triangle.
Animal with a quadrilateral body, supported on a fleshy peduncle, with an opening in front of the upper part for the passage of a bunch of ciliated tentacula.
A genus consisting of species of CONUS, having a rhomboidal or quadrilateralform and a coronated spire.
The telegraph is a quadrilateralfigure of white stone, and it has never been finished.
On looking more closely into their position through the glass, it could be seen that they had fortified the high table-land on their right with an earthwork of quadrilateral form, in which I counted sixteen embrasures.
From the points B and C, I draw straight lines at right angles to AB and AC, and therefore tangential to the circle X, to meet AG produced at D, and join BD and CD, producing the quadrilateral ACDB.
Joining two not adjacent angles of a quadrilateral or multilateral figure; running across from corner to corner; crossing at an angle with one of the sides.
The four points A, B, A1, B1 therefore form a plane quadrilateral on the base A1B1 and having right angles at the base.
Two asymptotes and any two tangents to an hyperbola may be considered as a quadrilateral circumscribed about the hyperbola.
This property of the complete quadrilateral allows the solution of the problem: To construct the harmonic conjugate D to a point C with regard to two given points A and B.
Harmonic properties of the complete quadrilateral and quadrangle.
The opposite angles of any quadrilateral figure inscribed in a circle are together equal to two right angles.
Of these theorems, those about the quadrilateral give rise to a number of others.
This follows from the previous theorem by considering A'B as a diagonal of the quadrilateral ALB'M.
The regular triangle is equilateral, the regular quadrilateral is the square.
But in such a quadrilateral the intersections of the diagonals and the points of contact of opposite sides lie in a line (S 54).
It rises from a truncated pyramid, and forms a quadrilateral separated by pilasters, ornamented with hieroglyphics and human figures.
Thus, The three pairs of rays which may be drawn from a point through the three pairs of opposite vertices of a complete quadrilateral are said to be in involution.
He states the theorem, in effect, as follows: Given a simple quadrilateral inscribed in a conic section, every transversal meets the conic and the four sides of the quadrilateral in six points which are in involution.
If a quadrilateral be circumscribed about a conic, the lines joining two pairs of opposite vertices and the lines joining two opposite points of contact are four lines which meet in a point.
The method which has been used in Chapter II to develop the notion of four harmonic points by means of the complete quadrilateral is due to Von Staudt.
We find in this little book the beautiful theorem concerning a quadrilateral inscribed in a conic section, which is given by his name in § 138.
The four lines joining the two opposite pairs of vertices and the two opposite points of contact of a quadrilateral circumscribed about a conic all meet in a point.
Consider the quadrilateral K, L, M, N inscribed in the conic (Fig.
If two pairs of lines in Brianchon’s hexagon coalesce, we have a theorem concerning a quadrilateral circumscribed about a conic.
A figure that is bounded by four straight lines is termed a quadrangle, quadrilateral or tetragon.
If two of the parallel sides of a quadrilateral are of unequal lengths and the angles of the other two sides are not equal, as in Figure 70, it is termed a trapezoid.
This is a necessary and sufficient condition for a harmonic range, and the quadrilateral construction is the general method for giving effect to it.
The two mathematically fundamental things in projective Geometry are anharmonic ratio, and the quadrilateral construction.
With three given collinear points, however, we have more given than a mere straight line, and the quadrilateral construction enables us uniquely to determine any number of fresh collinear points.
With this preliminary, let us see in what the quadrilateral construction consists.
We have next to consider the quadrilateral construction[124].
Let ABCD be any quadrilateral formed of jointed links.
The above list will hopefully give you a few useful examples demonstrating the appropriate usage of "quadrilateral" in a variety of sentences. We hope that you will now be able to make sentences using this word.
