New Elementary Geometry: With Practical Applications : a Shorter Course Upon the Basis of the Larger WorkRobert S. Davis & Company, 1874 - 176 páginas |
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Página 8
... ANGLES AND LINES . 10. An Angle is the difference in the direction of two lines , which meet at a point ; as the ... Right Angle is one which is formed by a straight line and a per- pendicular to it ; as the angle CAB . 13. An Acute Angle is ...
... ANGLES AND LINES . 10. An Angle is the difference in the direction of two lines , which meet at a point ; as the ... Right Angle is one which is formed by a straight line and a per- pendicular to it ; as the angle CAB . 13. An Acute Angle is ...
Página 9
... right angle ; as the an- gle EFG . F G Acute and obtuse angles are sometimes called oblique angles . B C D 14. Parallel Lines are such as , A- being in the same plane , cannot meet , however far either way both of them may be produced ...
... right angle ; as the an- gle EFG . F G Acute and obtuse angles are sometimes called oblique angles . B C D 14. Parallel Lines are such as , A- being in the same plane , cannot meet , however far either way both of them may be produced ...
Página 10
... angles is called Lue point or meetin tex of the angle , and the equal sides and equal angles are ' d angles . angle ... Right - angled Triangle is one which has a right angle ; as the triangle JK L. H I J K The side opposite to the right ...
... angles is called Lue point or meetin tex of the angle , and the equal sides and equal angles are ' d angles . angle ... Right - angled Triangle is one which has a right angle ; as the triangle JK L. H I J K The side opposite to the right ...
Página 11
... angles are right angles ; as the parallelogram A B C D. A Square is a rectangle whose sides are equal ; as the rectangle E F G H. 22. A Rhomboid is any parallelo- gram whose angles are not right angles ; as the parallelogram I J K L. A ...
... angles are right angles ; as the parallelogram A B C D. A Square is a rectangle whose sides are equal ; as the rectangle E F G H. 22. A Rhomboid is any parallelo- gram whose angles are not right angles ; as the parallelogram I J K L. A ...
Página 12
... right angles are equal to one another . 12. Magnitudes which coincide throughout their whole ex- tent , are equal . POSTULATES . 27. A Postulate is a self - evident problem ; such as , — 1. That a straight line may be drawn from one ...
... right angles are equal to one another . 12. Magnitudes which coincide throughout their whole ex- tent , are equal . POSTULATES . 27. A Postulate is a self - evident problem ; such as , — 1. That a straight line may be drawn from one ...
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New Elementary Geometry with Practical Applications Benjamin Greenleaf Sin vista previa disponible - 2016 |
Términos y frases comunes
ABCD ABCDEF alti altitude Theo angle A CD axis base multiplied bisect chord circum circumference circumscribed cone convex surface D E F diagonal diameter divided ELEMENTARY ALGEBRA ellipse entire surface equal Theo equivalent formed frustum greater GREENLEAF'S half the sum hence homologous homologous sides hypothenuse inches inscribed circle inscribed square intersection magnitudes mean proportional measured by half Metric System number of sides parallelogram parallelopipedon perimeter perpendicular prism PROBLEM quadrilateral radii radius ratio rectangle rectangular regular polygon Required the area Required the volume rhombus right angles Theo right pyramid rods Scholium SCHOOLS sector semicircle side A B side B C similar slant hight solid sphere is equal spherical square described square feet square root tangent THEOREM third triangles A B C triangular triangular prism tude vertex
Pasajes populares
Página 23 - 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.
Página 83 - Two triangles, which have an angle of the one equal to an angle of the other, and the sides containing these angles proportional, are similar.
Página 29 - All the interior angles of any rectilineal figure, together with four right angles, are equal to twice as many right angles as the figure has sides.
Página 61 - At a point in a given straight line to make an angle equal to a given angle.
Página 85 - If in a right triangle a perpendicular is drawn from the vertex of the right angle to the hypotenuse : I.
Página 93 - The side of a regular hexagon inscribed in a circle is equal to the radius of the circle.
Página 62 - Through a given point to draw a straight line parallel to a given straight line, Let A be the given point, and BC the given straight line : it is required to draw through the point A a straight line parallel to BC.
Página 100 - The circumferences of circles are to each other as their radii, and their areas are to each other as the squares of their radii. Let C denote the circumference of one of ^ the circles, R its radius OA, A its area; and let C...
Página 88 - FIK are similar ; hence the similar polygons may be divided into the same number of triangles similar each to each, and similarly situated.
Página 124 - But the solidity of each triangular prism is equal to the product of its base by its altitude ; and.