Elements of Geometry: With Practical Applications Designed for BeginnersD. Appleton, 1853 - 320 σελίδες |
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Σελίδα 12
... four right - angles . It is obvious that this angular magnitude has no dependence upon the length of the revolving line . AT As A7 A6 ( 16. ) Angular magnitude is expressed numerically by supposing the whole space to be divided into 360 ...
... four right - angles . It is obvious that this angular magnitude has no dependence upon the length of the revolving line . AT As A7 A6 ( 16. ) Angular magnitude is expressed numerically by supposing the whole space to be divided into 360 ...
Σελίδα 13
... four equal portions , each being a right - angle . Therefore the en- tire circumference may , with great propriety , be taken as the measure of 360 ° , or four right- angles . Any fractional part of the circum- ference will be the ...
... four equal portions , each being a right - angle . Therefore the en- tire circumference may , with great propriety , be taken as the measure of 360 ° , or four right- angles . Any fractional part of the circum- ference will be the ...
Σελίδα 14
... four sides . XIV . The simplest kind of polygon is one having only three sides , and is called a triangle . A polygon of four sides is called a quadrilateral ; that of five sides is called a pentagon ; that of six sides is called a ...
... four sides . XIV . The simplest kind of polygon is one having only three sides , and is called a triangle . A polygon of four sides is called a quadrilateral ; that of five sides is called a pentagon ; that of six sides is called a ...
Σελίδα 15
... four angles of a parallelogram are right - angles , the figure is called a rectangle . XIX . When the four sides of a rectangle are equal , the figure is called a square . XX . When the four sides of a par- allelogram are equal , and ...
... four angles of a parallelogram are right - angles , the figure is called a rectangle . XIX . When the four sides of a rectangle are equal , the figure is called a square . XX . When the four sides of a par- allelogram are equal , and ...
Σελίδα 20
... four right- angles . ( 27. ) The instrument called a square , which is extensively used in the arts for tracing lines at right - angles to each other , consists of two flat rulers placed at right- angles , as in the adjoining figure ...
... four right- angles . ( 27. ) The instrument called a square , which is extensively used in the arts for tracing lines at right - angles to each other , consists of two flat rulers placed at right- angles , as in the adjoining figure ...
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a+b+c altitude angle ABC angle ACD angle BAC bisect centre chord circ circular sector circumference circumscribed polygon coincide cone consequently convex surface cylinder diagonal diameter distance draw equal and parallel equiangular equilateral triangle equivalent exterior angle ference figure formed given line greater half the arc hypothenuse inscribed circle intersection isosceles join less Let ABC line CD lines drawn magnitude measured by half meet multiplied number of sides opposite angles parallel lines parallelogram parallelopipedon pendicular perimeter perpen perpendicular plane MN point G prism PROBLEM produced Prop proportional PROPOSITION pyramid radii radius rectangle regular polygon respectively equal right-angled triangle Sabc Schol Scholium scribed semicircle semicircumference side AC similar solid angle sphere spherical polygon square straight line suppose tangent THEOREM three sides triangle ABC triangular prism vertex VIII