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Elements of Practical Geometry, by the Author of 'Arithmetic for Young Children'
Δεν υπάρχει διαθέσιμη προεπισκόπηση - 2015
Elements of Practical Geometry, by the Author of 'arithmetic for Young Children'
Δεν υπάρχει διαθέσιμη προεπισκόπηση - 2018
acute altitude angles equal base bisect bottom called centre circle circumference compasses cord correct cover cube cubic curved surface cylinder diagonals diagrams diameter distance divided dotted draw an arc drawn ellipse equal faces feet figure FIND flat fold four four-sided Geometry given line greater half height hexagon horizontal inches inclined line intersecting irregular join larger length less longer manner mark means measure meet multiply named object oblong obtuse opposite oval pairs parallel parallelogram pencil pentagon perpendicular plane poles prism produce protractor pyramid quarter radius regular right angle round rule ruler scale shapes short side shorter shortest sides similar slip smaller solid sometimes sphere square square inches sticks straight edge straight lines string surface third touches triangle upper upright vertical wood yards
Σελίδα 94 - TROY WEIGHT. 24 Grains (gr.) make 1 Pennyweight, dwt. 20 Pennyweights " 1 Ounce, oz. 12 Ounces "1 Pound, Ib. M APOTHECARIES
Σελίδα 94 - Weight. 20 grains, gr., make 1 scruple, 9 3 scruples 1 drachm, 3 8 drachms 1 ounce, § 12 ounces 1 pound, Ib Apothecarie^ Wine Measure.
Σελίδα 95 - DIGGING. 24 Cubic feet of sand, or 18 cubic feet of earth, or 17 cubic feet of clay, make 1 ton. 1 Yard cube of solid gravel or earth contains 18 heaped bushels before digging, and 27 heaped bushels when dug.
Σελίδα 92 - MEASURE. 144 sq. Inches . . . .make 1 sq. Foot. 9 sq. Feet 1 sq. Yard.
Σελίδα 54 - ... 60°. Having constructed the containing rectangle, draw diagonals by means of the set-square resting on its shortest side on the T-square. All lines drawn against the hypothenuse of the setsquare in this position will be at 60° to the horizontal lines and at 30° to the perpendiculars. Now divide tho base into the required number of equal parts, and draw lines from them parallel to both diagonals.
Σελίδα 89 - The general principle for finding the contents of cubic bodies is to multiply the length by the breadth, and the product by the thickness, but the rule applies directly only to the cube or right prism, being subject to modifications as applied to solid figures of other forms. See IT 51. 1. How many solid inches in a globe 7 inches in diameter ? NOTE 2. — The solid contents of a globe are found by multiplying the area of its surface...
Σελίδα 90 - The cubical content of a right circular cone is onethird of that of a cylinder on the same base and of the same altitude.
Σελίδα 89 - Since the content of any pyramid is equal to one-third of the content of a prism on the same base and of the same altitude, the contente of the four equal pyramids can be found, and the content, or volume, of the tetrahedron determined.