Elements of Geometry Upon the Inductive Method: To which is Added an Introduction to Descriptive GeometryHilliard and Brown, 1829 - 172 σελίδες |
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Σελίδα 4
... equal to two right an- gles , the exterior lines CB , BD , must be in the same straight line ; otherwise something ... equal to two right angles . And we hence derive this general truth , that , - When a straight line is met by several ...
... equal to two right an- gles , the exterior lines CB , BD , must be in the same straight line ; otherwise something ... equal to two right angles . And we hence derive this general truth , that , - When a straight line is met by several ...
Σελίδα 5
... equal . As these angles have correspondent situa- tions in relation to these two intersections , they are call- ed ... equal . 19. The sum of the two angles AEC and CEH , is equal to two right angles ( 13 ) ; if instead of the angle AEC ...
... equal . As these angles have correspondent situa- tions in relation to these two intersections , they are call- ed ... equal . 19. The sum of the two angles AEC and CEH , is equal to two right angles ( 13 ) ; if instead of the angle AEC ...
Σελίδα 6
... equal to two right - angles . ( 3. ) The sum of the two exterior angles on the same side is equal to two right - angles . ( 4. ) The alternate - internal angles are equal to each other ; and ( 5. ) The alternate - external angles are equal ...
... equal to two right - angles . ( 3. ) The sum of the two exterior angles on the same side is equal to two right - angles . ( 4. ) The alternate - internal angles are equal to each other ; and ( 5. ) The alternate - external angles are equal ...
Σελίδα 7
... equal , the arcs drawn with the same radius , from the vertices of the angles , as centres , will be also equal . We hence see how the magnitude of an an- gle may be designated by a circular arc . For this purpose , the ancients divided ...
... equal , the arcs drawn with the same radius , from the vertices of the angles , as centres , will be also equal . We hence see how the magnitude of an an- gle may be designated by a circular arc . For this purpose , the ancients divided ...
Σελίδα 8
... equal parts , called quadrants . ABC is a quadrant ; the arc AB , is an arc of 90 ° , and the measure of the an- gle ACB , which is a right - angle . A right angle then is an angle of 90 degrees . If we divide the arc AB into 90 equal ...
... equal parts , called quadrants . ABC is a quadrant ; the arc AB , is an arc of 90 ° , and the measure of the an- gle ACB , which is a right - angle . A right angle then is an angle of 90 degrees . If we divide the arc AB into 90 equal ...
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Elements of Geometry Upon the Inductive Method James Hayward Δεν υπάρχει διαθέσιμη προεπισκόπηση - 2019 |
Elements of Geometry Upon the Inductive Method James Hayward Δεν υπάρχει διαθέσιμη προεπισκόπηση - 2019 |
Συχνά εμφανιζόμενοι όροι και φράσεις
ABCD allel axis base bisect body called centre chord circumference co-ordinate planes conical surface construct contained cutting plane cylinder cylindrical surface Descriptive Geometry determine diagonals diameter dicular diedral distance draw equivalent exterior angles faces figure four right-angles generatrix Geometry give given line ground line height homologous horizontal plane horizontal projection horizontal trace hypothenuse inclination inscribed polygon intersection isosceles triangle line parallel lunary surface magnitude meet multiplied number of sides opposite parallel lines parallelogram parallelopiped perpen perpendicular perspective plane angles plane of projection plane passing polyedral angle polyedrons PROBLEM projecting planes proposed plane proposed point pyramid radii ratio rectangle rectilinear regular polygons revolve right-angled triangle right-line similar triangles sphere square straight line summit Suppose surface of revolution tangent tetraedron tion triangle ABC triangular prism triedral angle vertex vertical plane vertical projection volume
Δημοφιλή αποσπάσματα
Σελίδα ii - Co. of the said district, have deposited in this office the title of a book, the right whereof they claim as proprietors, in the words following, to wit : " Tadeuskund, the Last King of the Lenape. An Historical Tale." In conformity to the Act of the Congress of the United States...
Σελίδα ii - An act supplementary to an act, entitled, * An act for the encouragement of learning, by securing the copies of maps, charts, and books to the authors and proprietors of such copies, during the times therein mentioned,* and extending the benefits thereof to the arts of designing, engraving, and etching historical and other prints.
Σελίδα 13 - FGH, have a side and the two adjacent angles of the one equal to a side and the two adjacent angles of the other, each to each ; therefore these triangles are equal (Prop.
Σελίδα 65 - The perimeters of two regular polygons of the same number of sides, are to each other as their homologous sides, and their areas are to each other as the squares of those sides (Prop.
Σελίδα 61 - The square described upon the hypothenuse of a rightangled triangle is equivalent to the sum of the squares described upon the other two sides.
Σελίδα 12 - 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.
Σελίδα 63 - Prove that in any triangle the square on the side opposite an acute angle is equivalent to the sum of the squares of the other two sides diminished by twice the product of one of these sides and the projection of the other upon that side.
Σελίδα 24 - Four quantities are in proportion when the ratio of the first to the second is equal to the ratio of the third to the fourth.
Σελίδα 62 - The rectangle contained by the sum and difference of two lines, is equivalent to the difference of the squares of those lines.
Σελίδα ii - States entitled an act for the encouragement of learning hy securing the copies of maps, charts and books to the author., and proprietors of such copies during the times therein mentioned, and also to an act entitled an act supplementary to an act, entitled an act for the encouragement of learning by securing the copies of maps, charts and books to the authors and proprietors of such copies during the times therein mentioned and extending the benefits thereof to the arts of designing, engraving and...