Elements of Geometry, Conic Sections, and Plane TrigonometryHarper & Bros., 1877 - 443 σελίδες |
Αναζήτηση στο βιβλίο
Αποτελέσματα 1 - 5 από τα 45.
Σελίδα 15
... rectangle , which has all its angles right an- gles , but all its sides are not necessarily equal . 4th . The square , which is an equilateral rectangle . 33. An equilateral polygon is one which has all its sides equal . An equiangular ...
... rectangle , which has all its angles right an- gles , but all its sides are not necessarily equal . 4th . The square , which is an equilateral rectangle . 33. An equilateral polygon is one which has all its sides equal . An equiangular ...
Σελίδα 38
... rectangle . A PROPOSITION XXXI . B THEOREM ( Converse of Prop . XXX . ) If the opposite sides of a quadrilateral are equal , each to each , the equal sides are parallel , and the figure is a parallelogram . Let ABDC be a quadrilateral ...
... rectangle . A PROPOSITION XXXI . B THEOREM ( Converse of Prop . XXX . ) If the opposite sides of a quadrilateral are equal , each to each , the equal sides are parallel , and the figure is a parallelogram . Let ABDC be a quadrilateral ...
Σελίδα 66
... rectangle , etc. 4. Similar polygons are such as have the angles of the one equal to the angles of the other , each to each , and the sides about the equal angles proportional . Sides which have the same posi- tion in the two polygons ...
... rectangle , etc. 4. Similar polygons are such as have the angles of the one equal to the angles of the other , each to each , and the sides about the equal angles proportional . Sides which have the same posi- tion in the two polygons ...
Σελίδα 67
... rectangle which has the same base and the same altitude . PROPOSITION II . THEOREM . Every triangle is half of the parallelogram which has the same base and the same altitude . Let the parallelogram ABDE and the triangle ABC have the A ...
... rectangle which has the same base and the same altitude . PROPOSITION II . THEOREM . Every triangle is half of the parallelogram which has the same base and the same altitude . Let the parallelogram ABDE and the triangle ABC have the A ...
Σελίδα 68
... rectangles will thus be formed , all equal to each other , since they have equal bases and altitudes ( Pr . 1 ) . The rectangle ABCD will contain seven par- tial rectangles , while AEFD will contain four ; therefore the rect- angle ABCD ...
... rectangles will thus be formed , all equal to each other , since they have equal bases and altitudes ( Pr . 1 ) . The rectangle ABCD will contain seven par- tial rectangles , while AEFD will contain four ; therefore the rect- angle ABCD ...
Περιεχόμενα
11 | |
40 | |
51 | |
66 | |
93 | |
102 | |
110 | |
125 | |
271 | |
278 | |
287 | |
293 | |
299 | |
306 | |
321 | |
343 | |
137 | |
152 | |
174 | |
191 | |
201 | |
217 | |
238 | |
262 | |
263 | |
Άλλες εκδόσεις - Προβολή όλων
Συχνά εμφανιζόμενοι όροι και φράσεις
ABCD altitude angle ABC angle ACB angle BAC base bisect centre centre of symmetry chord circle circumference cone conjugate conjugate hyperbola Cosine Cotang curve described diagonals diameter directrix distance divided draw ellipse equal to AC equilateral equivalent figure foci frustum given angle given line given point given straight line greater half Hence hyperbola hypothenuse inscribed intersection join latus rectum less Let ABC line drawn logarithm major axis meet multiplied number of sides ordinate parabola parallel to BC parallelogram parallelopiped perimeter perpendicular plane MN polyedron prism produced projection Prop PROPOSITION pyramid quadrant quadrilateral radical axis radii radius ratio rectangle regular polygon right-angled triangle Scholium secant segment side AC similar sine solid angle sphere spherical square subtangent symmetrical Tang tangent THEOREM transverse axis triangle ABC vertex vertices
Δημοφιλή αποσπάσματα
Σελίδα 68 - Any two rectangles are to each other as the products of their bases by their altitudes.
Σελίδα 35 - If two triangles have two angles of the one equal to two angles of the other, each to each, and one side equal to one side, viz.
Σελίδα 187 - The sum of the angles of a spherical triangle is greater than two and less than six right angles ; that is, greater than 180° and less than 540°. (gr). If A'B'C' is the polar triangle of ABC...
Σελίδα 64 - BEC, taken together, are measured by half the circumference ; hence their sum is equal to two right angles.
Σελίδα 71 - IF a straight line be divided into any two parts, the square of the whole line is equal to the squares of the two parts, together with twice the' rectangle contained by the parts.
Σελίδα 23 - BC common to the two triangles, which is adjacent to their equal angles ; therefore their other sides shall be equal, each to each, and the third angle of the one to the third angle of the other, (26.
Σελίδα 20 - Wherefore, when a straight line, &c. QED PROP. XIV. THEOR. If, at a point in a straight line, two other straight lines, upon the opposite sides of it, make the adjacent angles together equal to two right angles, these two straight lines shall be in one and the same straight line.
Σελίδα 124 - The area of a circle is equal to the product of its circumference by half the radius.* Let ACDE be a circle whose centre is O and radius OA : then will area OA— ^OAxcirc.
Σελίδα 177 - THEOREM. The sum of the sides of a spherical polygon, is less than the circumference of a great circle. Let...
Σελίδα 27 - If two triangles have the three sides of the one equal to the three sides of the other, each to each, the triangles are congruent.